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Finding the Third Proportional to 17,778 and 26,715

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Solution

The third proportional to 17,778 and 26,715 is: 40,144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,778 : 26,715 = 26,715 : x
  2. Step 2: Convert to fraction form
    17,778/26,715 = 26,715/x
  3. Step 3: Cross multiply
    17,778x = 26,715 × 26,715
  4. Step 4: Simplify right side
    17,778x = 713,691,225
  5. Step 5: Solve for x
    x = 713,691,225/17,778
  6. Step 6: Final answer
    x = 40,144.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.