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Finding the Third Proportional to 20,187 and 30,717

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Solution

The third proportional to 20,187 and 30,717 is: 46,739.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187 : 30,717 = 30,717 : x
  2. Step 2: Convert to fraction form
    20,187/30,717 = 30,717/x
  3. Step 3: Cross multiply
    20,187x = 30,717 × 30,717
  4. Step 4: Simplify right side
    20,187x = 943,534,089
  5. Step 5: Solve for x
    x = 943,534,089/20,187
  6. Step 6: Final answer
    x = 46,739.69

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.