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Finding the Third Proportional to 11,098 and 15,418

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Solution

The third proportional to 11,098 and 15,418 is: 21,419.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,098 : 15,418 = 15,418 : x
  2. Step 2: Convert to fraction form
    11,098/15,418 = 15,418/x
  3. Step 3: Cross multiply
    11,098x = 15,418 × 15,418
  4. Step 4: Simplify right side
    11,098x = 237,714,724
  5. Step 5: Solve for x
    x = 237,714,724/11,098
  6. Step 6: Final answer
    x = 21,419.60

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.