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Finding the Third Proportional to 20,445 and 30,769

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Solution

The third proportional to 20,445 and 30,769 is: 46,306.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445 : 30,769 = 30,769 : x
  2. Step 2: Convert to fraction form
    20,445/30,769 = 30,769/x
  3. Step 3: Cross multiply
    20,445x = 30,769 × 30,769
  4. Step 4: Simplify right side
    20,445x = 946,731,361
  5. Step 5: Solve for x
    x = 946,731,361/20,445
  6. Step 6: Final answer
    x = 46,306.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.