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Finding the Third Proportional to 8,278.50 and 12,525

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Solution

The third proportional to 8,278.50 and 12,525 is: 18,949.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.50 : 12,525 = 12,525 : x
  2. Step 2: Convert to fraction form
    8,278.50/12,525 = 12,525/x
  3. Step 3: Cross multiply
    8,278.50x = 12,525 × 12,525
  4. Step 4: Simplify right side
    8,278.50x = 156,875,625
  5. Step 5: Solve for x
    x = 156,875,625/8,278.50
  6. Step 6: Final answer
    x = 18,949.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.