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Finding the Third Proportional to 7,218.38 and 15,003.75

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Solution

The third proportional to 7,218.38 and 15,003.75 is: 31,186.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.38 : 15,003.75 = 15,003.75 : x
  2. Step 2: Convert to fraction form
    7,218.38/15,003.75 = 15,003.75/x
  3. Step 3: Cross multiply
    7,218.38x = 15,003.75 × 15,003.75
  4. Step 4: Simplify right side
    7,218.38x = 225,112,514.06
  5. Step 5: Solve for x
    x = 225,112,514.06/7,218.38
  6. Step 6: Final answer
    x = 31,186.04

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.