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Finding the Third Proportional to 12,972 and 25,317

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Solution

The third proportional to 12,972 and 25,317 is: 49,410.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972 : 25,317 = 25,317 : x
  2. Step 2: Convert to fraction form
    12,972/25,317 = 25,317/x
  3. Step 3: Cross multiply
    12,972x = 25,317 × 25,317
  4. Step 4: Simplify right side
    12,972x = 640,950,489
  5. Step 5: Solve for x
    x = 640,950,489/12,972
  6. Step 6: Final answer
    x = 49,410.31

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.