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Finding the Fourth Proportional to 20,165.92, 30,251.76 and 6,316

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Solution

The fourth proportional to 20,165.92, 30,251.76 and 6,316 is: 9,474.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.92 : 30,251.76 = 6,316 : x
  2. Step 2: Convert to fraction form
    20,165.92/30,251.76 = 6,316/x
  3. Step 3: Cross multiply
    20,165.92x = 30,251.76 × 6,316
  4. Step 4: Simplify right side
    20,165.92x = 191,070,116.16
  5. Step 5: Solve for x
    x = 191,070,116.16/20,165.92
  6. Step 6: Final answer
    x = 9,474.90

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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.