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Finding the Fourth Proportional to 20,387.59, 30,545.97 and 11,034.05

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Solution

The fourth proportional to 20,387.59, 30,545.97 and 11,034.05 is: 16,531.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.59 : 30,545.97 = 11,034.05 : x
  2. Step 2: Convert to fraction form
    20,387.59/30,545.97 = 11,034.05/x
  3. Step 3: Cross multiply
    20,387.59x = 30,545.97 × 11,034.05
  4. Step 4: Simplify right side
    20,387.59x = 337,045,607.55
  5. Step 5: Solve for x
    x = 337,045,607.55/20,387.59
  6. Step 6: Final answer
    x = 16,531.90

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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.