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Finding the Third Proportional to 16,860 and 36,891

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Solution

The third proportional to 16,860 and 36,891 is: 80,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,860 : 36,891 = 36,891 : x
  2. Step 2: Convert to fraction form
    16,860/36,891 = 36,891/x
  3. Step 3: Cross multiply
    16,860x = 36,891 × 36,891
  4. Step 4: Simplify right side
    16,860x = 1,360,945,881
  5. Step 5: Solve for x
    x = 1,360,945,881/16,860
  6. Step 6: Final answer
    x = 80,720.40

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.