Home / 20,732.18-31,098.24-5,149.80

Finding the Fourth Proportional to 20,732.18, 31,098.24 and 5,149.80

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Solution

The fourth proportional to 20,732.18, 31,098.24 and 5,149.80 is: 7,724.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.18 : 31,098.24 = 5,149.80 : x
  2. Step 2: Convert to fraction form
    20,732.18/31,098.24 = 5,149.80/x
  3. Step 3: Cross multiply
    20,732.18x = 31,098.24 × 5,149.80
  4. Step 4: Simplify right side
    20,732.18x = 160,149,716.35
  5. Step 5: Solve for x
    x = 160,149,716.35/20,732.18
  6. Step 6: Final answer
    x = 7,724.69

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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.