Compare 8/54 and 21/4, Which fraction is greater?

Compare 8/54 and 21/4

1^st number: 8/54, 2^nd number: 5 1/4

8/54 is smaller than 21/4

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 4 is 108

Next, find the equivalent fraction of both fractional numbers with denominator 108
For the 1st fraction, since 54 × 2 = 108,
8/54 = 8 × 2/54 × 2 = 16/108
Likewise, for the 2nd fraction, since 4 × 27 = 108,
21/4 = 21 × 27/4 × 27 = 567/108
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
16/108 < 567/108 or 8/54 < 21/4

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