Home / 42,279.92-63,414.40-15,981.24

Finding the Fourth Proportional to 42,279.92, 63,414.40 and 15,981.24

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Solution

The fourth proportional to 42,279.92, 63,414.40 and 15,981.24 is: 23,969.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,279.92 : 63,414.40 = 15,981.24 : x
  2. Step 2: Convert to fraction form
    42,279.92/63,414.40 = 15,981.24/x
  3. Step 3: Cross multiply
    42,279.92x = 63,414.40 × 15,981.24
  4. Step 4: Simplify right side
    42,279.92x = 1,013,440,745.86
  5. Step 5: Solve for x
    x = 1,013,440,745.86/42,279.92
  6. Step 6: Final answer
    x = 23,969.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.