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Finding the Third Proportional to 9,940 and 15,819

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Solution

The third proportional to 9,940 and 15,819 is: 25,175.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940 : 15,819 = 15,819 : x
  2. Step 2: Convert to fraction form
    9,940/15,819 = 15,819/x
  3. Step 3: Cross multiply
    9,940x = 15,819 × 15,819
  4. Step 4: Simplify right side
    9,940x = 250,240,761
  5. Step 5: Solve for x
    x = 250,240,761/9,940
  6. Step 6: Final answer
    x = 25,175.13

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.