Home / 39,354.76-54,309.61-21,449.78

Finding the Fourth Proportional to 39,354.76, 54,309.61 and 21,449.78

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Solution

The fourth proportional to 39,354.76, 54,309.61 and 21,449.78 is: 29,600.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,354.76 : 54,309.61 = 21,449.78 : x
  2. Step 2: Convert to fraction form
    39,354.76/54,309.61 = 21,449.78/x
  3. Step 3: Cross multiply
    39,354.76x = 54,309.61 × 21,449.78
  4. Step 4: Simplify right side
    39,354.76x = 1,164,929,186.39
  5. Step 5: Solve for x
    x = 1,164,929,186.39/39,354.76
  6. Step 6: Final answer
    x = 29,600.72

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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.