Home / 39,424.47-54,404.91-21,519.78

Finding the Fourth Proportional to 39,424.47, 54,404.91 and 21,519.78

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Solution

The fourth proportional to 39,424.47, 54,404.91 and 21,519.78 is: 29,696.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,424.47 : 54,404.91 = 21,519.78 : x
  2. Step 2: Convert to fraction form
    39,424.47/54,404.91 = 21,519.78/x
  3. Step 3: Cross multiply
    39,424.47x = 54,404.91 × 21,519.78
  4. Step 4: Simplify right side
    39,424.47x = 1,170,781,490.10
  5. Step 5: Solve for x
    x = 1,170,781,490.10/39,424.47
  6. Step 6: Final answer
    x = 29,696.83

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1.5x scale

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.