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Finding the Fourth Proportional to 20,068.92, 30,103.38 and 8,375.76

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Solution

The fourth proportional to 20,068.92, 30,103.38 and 8,375.76 is: 12,563.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,068.92 : 30,103.38 = 8,375.76 : x
  2. Step 2: Convert to fraction form
    20,068.92/30,103.38 = 8,375.76/x
  3. Step 3: Cross multiply
    20,068.92x = 30,103.38 × 8,375.76
  4. Step 4: Simplify right side
    20,068.92x = 252,138,686.07
  5. Step 5: Solve for x
    x = 252,138,686.07/20,068.92
  6. Step 6: Final answer
    x = 12,563.64

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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.