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Finding the Third Proportional to 11,887.50 and 18,822

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Solution

The third proportional to 11,887.50 and 18,822 is: 29,801.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.50 : 18,822 = 18,822 : x
  2. Step 2: Convert to fraction form
    11,887.50/18,822 = 18,822/x
  3. Step 3: Cross multiply
    11,887.50x = 18,822 × 18,822
  4. Step 4: Simplify right side
    11,887.50x = 354,267,684
  5. Step 5: Solve for x
    x = 354,267,684/11,887.50
  6. Step 6: Final answer
    x = 29,801.70

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.