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Finding the Fourth Proportional to 20,502.87, 30,641.95 and 14,967.87

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Solution

The fourth proportional to 20,502.87, 30,641.95 and 14,967.87 is: 22,369.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.87 : 30,641.95 = 14,967.87 : x
  2. Step 2: Convert to fraction form
    20,502.87/30,641.95 = 14,967.87/x
  3. Step 3: Cross multiply
    20,502.87x = 30,641.95 × 14,967.87
  4. Step 4: Simplify right side
    20,502.87x = 458,644,496.10
  5. Step 5: Solve for x
    x = 458,644,496.10/20,502.87
  6. Step 6: Final answer
    x = 22,369.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.