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Finding the Third Proportional to 8,239.50 and 11,605.50

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Solution

The third proportional to 8,239.50 and 11,605.50 is: 16,346.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.50 : 11,605.50 = 11,605.50 : x
  2. Step 2: Convert to fraction form
    8,239.50/11,605.50 = 11,605.50/x
  3. Step 3: Cross multiply
    8,239.50x = 11,605.50 × 11,605.50
  4. Step 4: Simplify right side
    8,239.50x = 134,687,630.25
  5. Step 5: Solve for x
    x = 134,687,630.25/8,239.50
  6. Step 6: Final answer
    x = 16,346.58

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.