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Finding the Third Proportional to 12,004.50 and 18,009

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Solution

The third proportional to 12,004.50 and 18,009 is: 27,016.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,004.50 : 18,009 = 18,009 : x
  2. Step 2: Convert to fraction form
    12,004.50/18,009 = 18,009/x
  3. Step 3: Cross multiply
    12,004.50x = 18,009 × 18,009
  4. Step 4: Simplify right side
    12,004.50x = 324,324,081
  5. Step 5: Solve for x
    x = 324,324,081/12,004.50
  6. Step 6: Final answer
    x = 27,016.88

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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.