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Finding the Third Proportional to 9,109 and 20,005

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Solution

The third proportional to 9,109 and 20,005 is: 43,934.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,109 : 20,005 = 20,005 : x
  2. Step 2: Convert to fraction form
    9,109/20,005 = 20,005/x
  3. Step 3: Cross multiply
    9,109x = 20,005 × 20,005
  4. Step 4: Simplify right side
    9,109x = 400,200,025
  5. Step 5: Solve for x
    x = 400,200,025/9,109
  6. Step 6: Final answer
    x = 43,934.57

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.