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Finding the Third Proportional to 11,921.25 and 25,890.75

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Solution

The third proportional to 11,921.25 and 25,890.75 is: 56,229.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.25 : 25,890.75 = 25,890.75 : x
  2. Step 2: Convert to fraction form
    11,921.25/25,890.75 = 25,890.75/x
  3. Step 3: Cross multiply
    11,921.25x = 25,890.75 × 25,890.75
  4. Step 4: Simplify right side
    11,921.25x = 670,330,935.56
  5. Step 5: Solve for x
    x = 670,330,935.56/11,921.25
  6. Step 6: Final answer
    x = 56,229.92

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.