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Finding the Third Proportional to 13,813.75 and 21,245

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Solution

The third proportional to 13,813.75 and 21,245 is: 32,673.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.75 : 21,245 = 21,245 : x
  2. Step 2: Convert to fraction form
    13,813.75/21,245 = 21,245/x
  3. Step 3: Cross multiply
    13,813.75x = 21,245 × 21,245
  4. Step 4: Simplify right side
    13,813.75x = 451,350,025
  5. Step 5: Solve for x
    x = 451,350,025/13,813.75
  6. Step 6: Final answer
    x = 32,673.97

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.