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Finding the Third Proportional to 20,007 and 31,245

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Solution

The third proportional to 20,007 and 31,245 is: 48,795.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,007 : 31,245 = 31,245 : x
  2. Step 2: Convert to fraction form
    20,007/31,245 = 31,245/x
  3. Step 3: Cross multiply
    20,007x = 31,245 × 31,245
  4. Step 4: Simplify right side
    20,007x = 976,250,025
  5. Step 5: Solve for x
    x = 976,250,025/20,007
  6. Step 6: Final answer
    x = 48,795.42

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.