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Finding the Third Proportional to 13,648.78 and 20,905.17

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Solution

The third proportional to 13,648.78 and 20,905.17 is: 32,019.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,648.78 : 20,905.17 = 20,905.17 : x
  2. Step 2: Convert to fraction form
    13,648.78/20,905.17 = 20,905.17/x
  3. Step 3: Cross multiply
    13,648.78x = 20,905.17 × 20,905.17
  4. Step 4: Simplify right side
    13,648.78x = 437,026,211.12
  5. Step 5: Solve for x
    x = 437,026,211.12/13,648.78
  6. Step 6: Final answer
    x = 32,019.43

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.