Home / 39,429.38-54,412.68-21,524.78

Finding the Fourth Proportional to 39,429.38, 54,412.68 and 21,524.78

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Solution

The fourth proportional to 39,429.38, 54,412.68 and 21,524.78 is: 29,704.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,429.38 : 54,412.68 = 21,524.78 : x
  2. Step 2: Convert to fraction form
    39,429.38/54,412.68 = 21,524.78/x
  3. Step 3: Cross multiply
    39,429.38x = 54,412.68 × 21,524.78
  4. Step 4: Simplify right side
    39,429.38x = 1,171,220,966.21
  5. Step 5: Solve for x
    x = 1,171,220,966.21/39,429.38
  6. Step 6: Final answer
    x = 29,704.27

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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.