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Finding the Third Proportional to 13,149 and 20,112.75

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Solution

The third proportional to 13,149 and 20,112.75 is: 30,764.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149 : 20,112.75 = 20,112.75 : x
  2. Step 2: Convert to fraction form
    13,149/20,112.75 = 20,112.75/x
  3. Step 3: Cross multiply
    13,149x = 20,112.75 × 20,112.75
  4. Step 4: Simplify right side
    13,149x = 404,522,712.56
  5. Step 5: Solve for x
    x = 404,522,712.56/13,149
  6. Step 6: Final answer
    x = 30,764.52

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.