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Finding the Third Proportional to 8,636 and 11,388

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Solution

The third proportional to 8,636 and 11,388 is: 15,016.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636 : 11,388 = 11,388 : x
  2. Step 2: Convert to fraction form
    8,636/11,388 = 11,388/x
  3. Step 3: Cross multiply
    8,636x = 11,388 × 11,388
  4. Step 4: Simplify right side
    8,636x = 129,686,544
  5. Step 5: Solve for x
    x = 129,686,544/8,636
  6. Step 6: Final answer
    x = 15,016.97

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.