What is 15.3846384638463846... as a Fraction?

15.3846 equals 512773333 as a fraction.

How do you turn 15.3846 repeating into a fraction?

Detailed Answer:

Step 1: To convert 15.3846 repeating into a fraction, begin writing this simple equation:

n = 15.3846 (equation 1)

Step 2: Notice that there are 4 digits in the repeating block (3846), so multiply both sides by 10⁴ = 10000.

10000 × n = 153846.3846 (equation 2)

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

10000 × n = 153846.3846
    1 × n = 15.3846
 9999 × n = 153831

1538319999 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 3 (the GCF - greatest common factor).

n = 1538319999 = 153831 ÷ 39999 ÷ 3 = 512773333. So,

15.3846 = 512773333 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 512773333 is also equal to 1512823333 when expressed as a mixed number.

The repeating decimal 15.3846 (vinculum notation) has a repeated block length of 4. It is also represented as 15.384638463846... (ellipsis notation) which equals approximately 15.38463846384638463846 (decimal approximation)(*).

The recurring decimal 15.3846 can be written as a ratio of two integers having 51277 as the numerator and 3333 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.