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Finding the Third Proportional to 20,918 and 29,319

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Solution

The third proportional to 20,918 and 29,319 is: 41,093.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918 : 29,319 = 29,319 : x
  2. Step 2: Convert to fraction form
    20,918/29,319 = 29,319/x
  3. Step 3: Cross multiply
    20,918x = 29,319 × 29,319
  4. Step 4: Simplify right side
    20,918x = 859,603,761
  5. Step 5: Solve for x
    x = 859,603,761/20,918
  6. Step 6: Final answer
    x = 41,093.97

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.