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Finding the Third Proportional to 11,976 and 15,492

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Solution

The third proportional to 11,976 and 15,492 is: 20,040.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,976 : 15,492 = 15,492 : x
  2. Step 2: Convert to fraction form
    11,976/15,492 = 15,492/x
  3. Step 3: Cross multiply
    11,976x = 15,492 × 15,492
  4. Step 4: Simplify right side
    11,976x = 240,002,064
  5. Step 5: Solve for x
    x = 240,002,064/11,976
  6. Step 6: Final answer
    x = 20,040.25

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.