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Finding the Fourth Proportional to 19,796.38, 29,691.69 and 7,481.50

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Solution

The fourth proportional to 19,796.38, 29,691.69 and 7,481.50 is: 11,221.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,796.38 : 29,691.69 = 7,481.50 : x
  2. Step 2: Convert to fraction form
    19,796.38/29,691.69 = 7,481.50/x
  3. Step 3: Cross multiply
    19,796.38x = 29,691.69 × 7,481.50
  4. Step 4: Simplify right side
    19,796.38x = 222,138,378.74
  5. Step 5: Solve for x
    x = 222,138,378.74/19,796.38
  6. Step 6: Final answer
    x = 11,221.16

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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.