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Finding the Third Proportional to 7,129.75 and 17,176.38

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Solution

The third proportional to 7,129.75 and 17,176.38 is: 41,379.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.75 : 17,176.38 = 17,176.38 : x
  2. Step 2: Convert to fraction form
    7,129.75/17,176.38 = 17,176.38/x
  3. Step 3: Cross multiply
    7,129.75x = 17,176.38 × 17,176.38
  4. Step 4: Simplify right side
    7,129.75x = 295,027,858.14
  5. Step 5: Solve for x
    x = 295,027,858.14/7,129.75
  6. Step 6: Final answer
    x = 41,379.83

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.