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Finding the Third Proportional to 12,921.75 and 27,906.75

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Solution

The third proportional to 12,921.75 and 27,906.75 is: 60,269.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.75 : 27,906.75 = 27,906.75 : x
  2. Step 2: Convert to fraction form
    12,921.75/27,906.75 = 27,906.75/x
  3. Step 3: Cross multiply
    12,921.75x = 27,906.75 × 27,906.75
  4. Step 4: Simplify right side
    12,921.75x = 778,786,695.56
  5. Step 5: Solve for x
    x = 778,786,695.56/12,921.75
  6. Step 6: Final answer
    x = 60,269.44

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.