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Finding the Third Proportional to 11,520 and 15,198

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Solution

The third proportional to 11,520 and 15,198 is: 20,050.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520 : 15,198 = 15,198 : x
  2. Step 2: Convert to fraction form
    11,520/15,198 = 15,198/x
  3. Step 3: Cross multiply
    11,520x = 15,198 × 15,198
  4. Step 4: Simplify right side
    11,520x = 230,979,204
  5. Step 5: Solve for x
    x = 230,979,204/11,520
  6. Step 6: Final answer
    x = 20,050.28

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.