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Finding the Third Proportional to 13,357 and 20,680.75

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Solution

The third proportional to 13,357 and 20,680.75 is: 32,020.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357 : 20,680.75 = 20,680.75 : x
  2. Step 2: Convert to fraction form
    13,357/20,680.75 = 20,680.75/x
  3. Step 3: Cross multiply
    13,357x = 20,680.75 × 20,680.75
  4. Step 4: Simplify right side
    13,357x = 427,693,420.56
  5. Step 5: Solve for x
    x = 427,693,420.56/13,357
  6. Step 6: Final answer
    x = 32,020.17

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.