Home / 39,250.69-54,165.68-21,345.65

Finding the Fourth Proportional to 39,250.69, 54,165.68 and 21,345.65

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Solution

The fourth proportional to 39,250.69, 54,165.68 and 21,345.65 is: 29,456.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,250.69 : 54,165.68 = 21,345.65 : x
  2. Step 2: Convert to fraction form
    39,250.69/54,165.68 = 21,345.65/x
  3. Step 3: Cross multiply
    39,250.69x = 54,165.68 × 21,345.65
  4. Step 4: Simplify right side
    39,250.69x = 1,156,201,552.90
  5. Step 5: Solve for x
    x = 1,156,201,552.90/39,250.69
  6. Step 6: Final answer
    x = 29,456.85

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Double scale
Find fourth proportional to 39,251.69, 54,167.06 and 21,346.65
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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.