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Finding the Fourth Proportional to 20,251.43, 30,375.02 and 5,459.44

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Solution

The fourth proportional to 20,251.43, 30,375.02 and 5,459.44 is: 8,188.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.43 : 30,375.02 = 5,459.44 : x
  2. Step 2: Convert to fraction form
    20,251.43/30,375.02 = 5,459.44/x
  3. Step 3: Cross multiply
    20,251.43x = 30,375.02 × 5,459.44
  4. Step 4: Simplify right side
    20,251.43x = 165,830,599.19
  5. Step 5: Solve for x
    x = 165,830,599.19/20,251.43
  6. Step 6: Final answer
    x = 8,188.59

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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.