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Finding the Third Proportional to 12,540 and 18,634

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Solution

The third proportional to 12,540 and 18,634 is: 27,689.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540 : 18,634 = 18,634 : x
  2. Step 2: Convert to fraction form
    12,540/18,634 = 18,634/x
  3. Step 3: Cross multiply
    12,540x = 18,634 × 18,634
  4. Step 4: Simplify right side
    12,540x = 347,225,956
  5. Step 5: Solve for x
    x = 347,225,956/12,540
  6. Step 6: Final answer
    x = 27,689.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.