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Finding the Third Proportional to 11,150 and 15,187

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Solution

The third proportional to 11,150 and 15,187 is: 20,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150 : 15,187 = 15,187 : x
  2. Step 2: Convert to fraction form
    11,150/15,187 = 15,187/x
  3. Step 3: Cross multiply
    11,150x = 15,187 × 15,187
  4. Step 4: Simplify right side
    11,150x = 230,644,969
  5. Step 5: Solve for x
    x = 230,644,969/11,150
  6. Step 6: Final answer
    x = 20,685.65

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.