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Finding the Fourth Proportional to 42,892.92, 64,342.20 and 14,815.68

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Solution

The fourth proportional to 42,892.92, 64,342.20 and 14,815.68 is: 22,224.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,892.92 : 64,342.20 = 14,815.68 : x
  2. Step 2: Convert to fraction form
    42,892.92/64,342.20 = 14,815.68/x
  3. Step 3: Cross multiply
    42,892.92x = 64,342.20 × 14,815.68
  4. Step 4: Simplify right side
    42,892.92x = 953,273,445.70
  5. Step 5: Solve for x
    x = 953,273,445.70/42,892.92
  6. Step 6: Final answer
    x = 22,224.49

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1.5x scale

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.