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Finding the Fourth Proportional to 38,612.80, 57,919.20 and 16,426.90

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Solution

The fourth proportional to 38,612.80, 57,919.20 and 16,426.90 is: 24,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,612.80 : 57,919.20 = 16,426.90 : x
  2. Step 2: Convert to fraction form
    38,612.80/57,919.20 = 16,426.90/x
  3. Step 3: Cross multiply
    38,612.80x = 57,919.20 × 16,426.90
  4. Step 4: Simplify right side
    38,612.80x = 951,432,906.48
  5. Step 5: Solve for x
    x = 951,432,906.48/38,612.80
  6. Step 6: Final answer
    x = 24,640.35

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Similar ratio
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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.