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Finding the Fourth Proportional to 18,452.40, 27,691.56 and 8,071.44

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Solution

The fourth proportional to 18,452.40, 27,691.56 and 8,071.44 is: 12,112.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,452.40 : 27,691.56 = 8,071.44 : x
  2. Step 2: Convert to fraction form
    18,452.40/27,691.56 = 8,071.44/x
  3. Step 3: Cross multiply
    18,452.40x = 27,691.56 × 8,071.44
  4. Step 4: Simplify right side
    18,452.40x = 223,510,765.05
  5. Step 5: Solve for x
    x = 223,510,765.05/18,452.40
  6. Step 6: Final answer
    x = 12,112.83

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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.