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Finding the Third Proportional to 11,938 and 13,612

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Solution

The third proportional to 11,938 and 13,612 is: 15,520.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938 : 13,612 = 13,612 : x
  2. Step 2: Convert to fraction form
    11,938/13,612 = 13,612/x
  3. Step 3: Cross multiply
    11,938x = 13,612 × 13,612
  4. Step 4: Simplify right side
    11,938x = 185,286,544
  5. Step 5: Solve for x
    x = 185,286,544/11,938
  6. Step 6: Final answer
    x = 15,520.74

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.