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Finding the Fourth Proportional to 19,691.84, 29,542.68 and 5,840.88

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Solution

The fourth proportional to 19,691.84, 29,542.68 and 5,840.88 is: 8,762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,691.84 : 29,542.68 = 5,840.88 : x
  2. Step 2: Convert to fraction form
    19,691.84/29,542.68 = 5,840.88/x
  3. Step 3: Cross multiply
    19,691.84x = 29,542.68 × 5,840.88
  4. Step 4: Simplify right side
    19,691.84x = 172,555,248.76
  5. Step 5: Solve for x
    x = 172,555,248.76/19,691.84
  6. Step 6: Final answer
    x = 8,762.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.