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Finding the Third Proportional to 20,214 and 38,847

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Solution

The third proportional to 20,214 and 38,847 is: 74,655.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214 : 38,847 = 38,847 : x
  2. Step 2: Convert to fraction form
    20,214/38,847 = 38,847/x
  3. Step 3: Cross multiply
    20,214x = 38,847 × 38,847
  4. Step 4: Simplify right side
    20,214x = 1,509,089,409
  5. Step 5: Solve for x
    x = 1,509,089,409/20,214
  6. Step 6: Final answer
    x = 74,655.65

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Why These Related Problems?

These problems maintain the same ratio (1.92) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.