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Finding the Third Proportional to 12,499 and 18,511

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Solution

The third proportional to 12,499 and 18,511 is: 27,414.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,499 : 18,511 = 18,511 : x
  2. Step 2: Convert to fraction form
    12,499/18,511 = 18,511/x
  3. Step 3: Cross multiply
    12,499x = 18,511 × 18,511
  4. Step 4: Simplify right side
    12,499x = 342,657,121
  5. Step 5: Solve for x
    x = 342,657,121/12,499
  6. Step 6: Final answer
    x = 27,414.76

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.