What is 21.70303... as a Fraction?

21.703 equals 3581165 as a fraction.

How do you turn 21.703 repeating into a fraction?

Detailed Answer:

Step 1: To convert 21.703 repeating into a fraction, begin writing this simple equation:

n = 21.703 (equation 1)

Step 2: Notice that there are 2 digits in the repeating block (03) and 1 digit in the non-repeating part (7). Multiply both sides by 10³ = 1000.

1000 × n = 21703.03 (equation 2)

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

1000 × n = 21703.03
  10 × n = 21.703
 990 × n = 21486

21486990 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 6 (the GCF - greatest common factor).

n = 21486990 = 21486 ÷ 6990 ÷ 6 = 3581165. So,

21.703 = 3581165 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 3581165 is also equal to 21116165 when expressed as a mixed number.

The repeating decimal 21.703 (vinculum notation) has a repeated block length of 2. It is also represented as 21.7030303... (ellipsis notation) which equals approximately 21.70303030303 (decimal approximation)(*).

The recurring decimal 21.703 can be written as a ratio of two integers having 3581 as the numerator and 165 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.