Home / 39,443.79-54,432.69-21,538.92

Finding the Fourth Proportional to 39,443.79, 54,432.69 and 21,538.92

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Solution

The fourth proportional to 39,443.79, 54,432.69 and 21,538.92 is: 29,723.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,443.79 : 54,432.69 = 21,538.92 : x
  2. Step 2: Convert to fraction form
    39,443.79/54,432.69 = 21,538.92/x
  3. Step 3: Cross multiply
    39,443.79x = 54,432.69 × 21,538.92
  4. Step 4: Simplify right side
    39,443.79x = 1,172,421,355.29
  5. Step 5: Solve for x
    x = 1,172,421,355.29/39,443.79
  6. Step 6: Final answer
    x = 29,723.85

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Half scale
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Double scale
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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.