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Finding the Third Proportional to 6,640 and 11,016

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Solution

The third proportional to 6,640 and 11,016 is: 18,275.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640 : 11,016 = 11,016 : x
  2. Step 2: Convert to fraction form
    6,640/11,016 = 11,016/x
  3. Step 3: Cross multiply
    6,640x = 11,016 × 11,016
  4. Step 4: Simplify right side
    6,640x = 121,352,256
  5. Step 5: Solve for x
    x = 121,352,256/6,640
  6. Step 6: Final answer
    x = 18,275.94

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.