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Finding the Third Proportional to 11,161.50 and 15,867

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Solution

The third proportional to 11,161.50 and 15,867 is: 22,556.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.50 : 15,867 = 15,867 : x
  2. Step 2: Convert to fraction form
    11,161.50/15,867 = 15,867/x
  3. Step 3: Cross multiply
    11,161.50x = 15,867 × 15,867
  4. Step 4: Simplify right side
    11,161.50x = 251,761,689
  5. Step 5: Solve for x
    x = 251,761,689/11,161.50
  6. Step 6: Final answer
    x = 22,556.26

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.