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Finding the Third Proportional to 20,615 and 29,779

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Solution

The third proportional to 20,615 and 29,779 is: 43,016.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615 : 29,779 = 29,779 : x
  2. Step 2: Convert to fraction form
    20,615/29,779 = 29,779/x
  3. Step 3: Cross multiply
    20,615x = 29,779 × 29,779
  4. Step 4: Simplify right side
    20,615x = 886,788,841
  5. Step 5: Solve for x
    x = 886,788,841/20,615
  6. Step 6: Final answer
    x = 43,016.68

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.