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Finding the Fourth Proportional to 12,662.52, 18,989.46 and 4,874.04

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Solution

The fourth proportional to 12,662.52, 18,989.46 and 4,874.04 is: 7,309.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.52 : 18,989.46 = 4,874.04 : x
  2. Step 2: Convert to fraction form
    12,662.52/18,989.46 = 4,874.04/x
  3. Step 3: Cross multiply
    12,662.52x = 18,989.46 × 4,874.04
  4. Step 4: Simplify right side
    12,662.52x = 92,555,387.62
  5. Step 5: Solve for x
    x = 92,555,387.62/12,662.52
  6. Step 6: Final answer
    x = 7,309.40

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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.