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Finding the Third Proportional to 19,847 and 39,694

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Solution

The third proportional to 19,847 and 39,694 is: 79,388

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,847 : 39,694 = 39,694 : x
  2. Step 2: Convert to fraction form
    19,847/39,694 = 39,694/x
  3. Step 3: Cross multiply
    19,847x = 39,694 × 39,694
  4. Step 4: Simplify right side
    19,847x = 1,575,613,636
  5. Step 5: Solve for x
    x = 1,575,613,636/19,847
  6. Step 6: Final answer
    x = 79,388

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Why These Related Problems?

These problems maintain the same ratio (2) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.