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Finding the Third Proportional to 20,481.75 and 28,905.75

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Solution

The third proportional to 20,481.75 and 28,905.75 is: 40,794.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.75 : 28,905.75 = 28,905.75 : x
  2. Step 2: Convert to fraction form
    20,481.75/28,905.75 = 28,905.75/x
  3. Step 3: Cross multiply
    20,481.75x = 28,905.75 × 28,905.75
  4. Step 4: Simplify right side
    20,481.75x = 835,542,383.06
  5. Step 5: Solve for x
    x = 835,542,383.06/20,481.75
  6. Step 6: Final answer
    x = 40,794.48

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.