Home / 39,480.28-54,481.17-21,575.89

Finding the Fourth Proportional to 39,480.28, 54,481.17 and 21,575.89

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Solution

The fourth proportional to 39,480.28, 54,481.17 and 21,575.89 is: 29,773.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,480.28 : 54,481.17 = 21,575.89 : x
  2. Step 2: Convert to fraction form
    39,480.28/54,481.17 = 21,575.89/x
  3. Step 3: Cross multiply
    39,480.28x = 54,481.17 × 21,575.89
  4. Step 4: Simplify right side
    39,480.28x = 1,175,479,730.99
  5. Step 5: Solve for x
    x = 1,175,479,730.99/39,480.28
  6. Step 6: Final answer
    x = 29,773.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.