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Finding the Third Proportional to 15,551 and 18,079

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Solution

The third proportional to 15,551 and 18,079 is: 21,017.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551 : 18,079 = 18,079 : x
  2. Step 2: Convert to fraction form
    15,551/18,079 = 18,079/x
  3. Step 3: Cross multiply
    15,551x = 18,079 × 18,079
  4. Step 4: Simplify right side
    15,551x = 326,850,241
  5. Step 5: Solve for x
    x = 326,850,241/15,551
  6. Step 6: Final answer
    x = 21,017.96

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.