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Finding the Third Proportional to 8,661.75 and 18,508.13

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Solution

The third proportional to 8,661.75 and 18,508.13 is: 39,547.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.75 : 18,508.13 = 18,508.13 : x
  2. Step 2: Convert to fraction form
    8,661.75/18,508.13 = 18,508.13/x
  3. Step 3: Cross multiply
    8,661.75x = 18,508.13 × 18,508.13
  4. Step 4: Simplify right side
    8,661.75x = 342,550,691.02
  5. Step 5: Solve for x
    x = 342,550,691.02/8,661.75
  6. Step 6: Final answer
    x = 39,547.52

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.