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Finding the Fourth Proportional to 24,139.90, 36,166.65 and 20,683.90

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Solution

The fourth proportional to 24,139.90, 36,166.65 and 20,683.90 is: 30,988.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,139.90 : 36,166.65 = 20,683.90 : x
  2. Step 2: Convert to fraction form
    24,139.90/36,166.65 = 20,683.90/x
  3. Step 3: Cross multiply
    24,139.90x = 36,166.65 × 20,683.90
  4. Step 4: Simplify right side
    24,139.90x = 748,067,371.94
  5. Step 5: Solve for x
    x = 748,067,371.94/24,139.90
  6. Step 6: Final answer
    x = 30,988.83

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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.