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Finding the Third Proportional to 8,286 and 18,126

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Solution

The third proportional to 8,286 and 18,126 is: 39,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286 : 18,126 = 18,126 : x
  2. Step 2: Convert to fraction form
    8,286/18,126 = 18,126/x
  3. Step 3: Cross multiply
    8,286x = 18,126 × 18,126
  4. Step 4: Simplify right side
    8,286x = 328,551,876
  5. Step 5: Solve for x
    x = 328,551,876/8,286
  6. Step 6: Final answer
    x = 39,651.45

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.