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Finding the Third Proportional to 8,320.50 and 11,655

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Solution

The third proportional to 8,320.50 and 11,655 is: 16,325.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.50 : 11,655 = 11,655 : x
  2. Step 2: Convert to fraction form
    8,320.50/11,655 = 11,655/x
  3. Step 3: Cross multiply
    8,320.50x = 11,655 × 11,655
  4. Step 4: Simplify right side
    8,320.50x = 135,839,025
  5. Step 5: Solve for x
    x = 135,839,025/8,320.50
  6. Step 6: Final answer
    x = 16,325.82

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.