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Finding the Third Proportional to 11,778 and 18,259

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Solution

The third proportional to 11,778 and 18,259 is: 28,306.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,778 : 18,259 = 18,259 : x
  2. Step 2: Convert to fraction form
    11,778/18,259 = 18,259/x
  3. Step 3: Cross multiply
    11,778x = 18,259 × 18,259
  4. Step 4: Simplify right side
    11,778x = 333,391,081
  5. Step 5: Solve for x
    x = 333,391,081/11,778
  6. Step 6: Final answer
    x = 28,306.26

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.