What is 13.101428514285142851428514285... as a Fraction?

13.1014285 equals 5240519399996 as a fraction.

How do you turn 13.1014285 repeating into a fraction?

Detailed Answer:

Step 1: To convert 13.1014285 repeating into a fraction, begin writing this simple equation:

n = 13.1014285 (equation 1)

Step 2: Notice that there are 5 digits in the repeating block (14285) and 2 digits in the non-repeating part (10). Multiply both sides by 10⁷ = 10000000.

10000000 × n = 131014285.14285 (equation 2)

Step 3: Now subtract equation 1 from equation 2 to cancel the repeating block (or repetend) out.

10000000 × n = 131014285.14285
     100 × n = 13.1014285
 9999900 × n = 131012975

1310129759999900 could be the answer, but it still can be put in the simplest form, i.e., reduced.

To simplify this fraction, divide the numerator and denominator by 25 (the GCF - greatest common factor).

n = 1310129759999900 = 131012975 ÷ 259999900 ÷ 25 = 5240519399996. So,

13.1014285 = 5240519399996 as the lowest possible fraction.

As the numerator is greater than the denominator, we have an improper fraction, so we can also express it as a mixed number, thus 5240519399996 is also equal to 1340571399996 when expressed as a mixed number.

The repeating decimal 13.1014285 (vinculum notation) has a repeated block length of 5. It is also represented as 13.10142851428514285... (ellipsis notation) which equals approximately 13.101428514285142851428514285 (decimal approximation)(*).

The recurring decimal 13.1014285 can be written as a ratio of two integers having 5240519 as the numerator and 399996 as the denominator. So, it is a rational number (named after ratio). It can be shown that a number is rational if its decimal representation is repeating or terminating.

(*) At present, there is no single universally accepted notation or phrasing for repeating decimals.