Step 1: Start with the fraction 13/31.

Step 2: To convert a fraction into a percentage, divide the numerator by the denominator.

13 ÷ 31 = 0.4194

Step 3: Multiply the result by 100 to get the percentage.

0.4194 × 100 = 41.94%

Final Answer: 13/31 as a percentage is 41.94%.