What is 18.255454... as a Fraction?

18.2554 equals 200811100 as a fraction.

How do you turn 18.2554 repeating into a fraction?

Detailed Answer:

Step 1: To convert 18.2554 repeating into a fraction, begin writing this simple equation:

n = 18.2554 (equation 1)

Step 2: Notice that there are 2 digits in the repeating block (54) and 2 digits in the non-repeating part (25). Multiply both sides by 10⁴ = 10000.

10000 × n = 182554.54 (equation 2)

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

10000 × n = 182554.54
  100 × n = 18.2554
 9900 × n = 180729

1807299900 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 9 (the GCF - greatest common factor).

n = 1807299900 = 180729 ÷ 99900 ÷ 9 = 200811100. So,

18.2554 = 200811100 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 200811100 is also equal to 182811100 when expressed as a mixed number.

The repeating decimal 18.2554 (vinculum notation) has a repeated block length of 2. It is also represented as 18.25545454... (ellipsis notation) which equals approximately 18.255454545454 (decimal approximation)(*).

The recurring decimal 18.2554 can be written as a ratio of two integers having 20081 as the numerator and 1100 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.