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Finding the Third Proportional to 8,439 and 16,149

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Solution

The third proportional to 8,439 and 16,149 is: 30,902.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439 : 16,149 = 16,149 : x
  2. Step 2: Convert to fraction form
    8,439/16,149 = 16,149/x
  3. Step 3: Cross multiply
    8,439x = 16,149 × 16,149
  4. Step 4: Simplify right side
    8,439x = 260,790,201
  5. Step 5: Solve for x
    x = 260,790,201/8,439
  6. Step 6: Final answer
    x = 30,902.97

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.