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Finding the Third Proportional to 15,458.25 and 20,997.75

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Solution

The third proportional to 15,458.25 and 20,997.75 is: 28,522.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.25 : 20,997.75 = 20,997.75 : x
  2. Step 2: Convert to fraction form
    15,458.25/20,997.75 = 20,997.75/x
  3. Step 3: Cross multiply
    15,458.25x = 20,997.75 × 20,997.75
  4. Step 4: Simplify right side
    15,458.25x = 440,905,505.06
  5. Step 5: Solve for x
    x = 440,905,505.06/15,458.25
  6. Step 6: Final answer
    x = 28,522.34

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.