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Finding the Fourth Proportional to 20,159.27, 30,254.90 and 10,806.20

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Solution

The fourth proportional to 20,159.27, 30,254.90 and 10,806.20 is: 16,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.27 : 30,254.90 = 10,806.20 : x
  2. Step 2: Convert to fraction form
    20,159.27/30,254.90 = 10,806.20/x
  3. Step 3: Cross multiply
    20,159.27x = 30,254.90 × 10,806.20
  4. Step 4: Simplify right side
    20,159.27x = 326,940,500.38
  5. Step 5: Solve for x
    x = 326,940,500.38/20,159.27
  6. Step 6: Final answer
    x = 16,217.87

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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.