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Finding the Third Proportional to 8,736 and 18,455

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Solution

The third proportional to 8,736 and 18,455 is: 38,986.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736 : 18,455 = 18,455 : x
  2. Step 2: Convert to fraction form
    8,736/18,455 = 18,455/x
  3. Step 3: Cross multiply
    8,736x = 18,455 × 18,455
  4. Step 4: Simplify right side
    8,736x = 340,587,025
  5. Step 5: Solve for x
    x = 340,587,025/8,736
  6. Step 6: Final answer
    x = 38,986.61

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.