Home / 31,538.80-43,521.56-17,391.76

Finding the Fourth Proportional to 31,538.80, 43,521.56 and 17,391.76

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Solution

The fourth proportional to 31,538.80, 43,521.56 and 17,391.76 is: 23,999.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,538.80 : 43,521.56 = 17,391.76 : x
  2. Step 2: Convert to fraction form
    31,538.80/43,521.56 = 17,391.76/x
  3. Step 3: Cross multiply
    31,538.80x = 43,521.56 × 17,391.76
  4. Step 4: Simplify right side
    31,538.80x = 756,916,526.35
  5. Step 5: Solve for x
    x = 756,916,526.35/31,538.80
  6. Step 6: Final answer
    x = 23,999.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.