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Finding the Third Proportional to 20,517 and 26,938

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Solution

The third proportional to 20,517 and 26,938 is: 35,368.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517 : 26,938 = 26,938 : x
  2. Step 2: Convert to fraction form
    20,517/26,938 = 26,938/x
  3. Step 3: Cross multiply
    20,517x = 26,938 × 26,938
  4. Step 4: Simplify right side
    20,517x = 725,655,844
  5. Step 5: Solve for x
    x = 725,655,844/20,517
  6. Step 6: Final answer
    x = 35,368.52

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.