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Finding the Fourth Proportional to 20,502.20, 30,737.10 and 8,805.80

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Solution

The fourth proportional to 20,502.20, 30,737.10 and 8,805.80 is: 13,201.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.20 : 30,737.10 = 8,805.80 : x
  2. Step 2: Convert to fraction form
    20,502.20/30,737.10 = 8,805.80/x
  3. Step 3: Cross multiply
    20,502.20x = 30,737.10 × 8,805.80
  4. Step 4: Simplify right side
    20,502.20x = 270,664,755.18
  5. Step 5: Solve for x
    x = 270,664,755.18/20,502.20
  6. Step 6: Final answer
    x = 13,201.74

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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.