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Finding the Third Proportional to 12,536 and 15,940

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Solution

The third proportional to 12,536 and 15,940 is: 20,268.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,536 : 15,940 = 15,940 : x
  2. Step 2: Convert to fraction form
    12,536/15,940 = 15,940/x
  3. Step 3: Cross multiply
    12,536x = 15,940 × 15,940
  4. Step 4: Simplify right side
    12,536x = 254,083,600
  5. Step 5: Solve for x
    x = 254,083,600/12,536
  6. Step 6: Final answer
    x = 20,268.32

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.