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Finding the Third Proportional to 8,787 and 13,166

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Solution

The third proportional to 8,787 and 13,166 is: 19,727.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787 : 13,166 = 13,166 : x
  2. Step 2: Convert to fraction form
    8,787/13,166 = 13,166/x
  3. Step 3: Cross multiply
    8,787x = 13,166 × 13,166
  4. Step 4: Simplify right side
    8,787x = 173,343,556
  5. Step 5: Solve for x
    x = 173,343,556/8,787
  6. Step 6: Final answer
    x = 19,727.27

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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.