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Finding the Third Proportional to 9,830 and 20,769

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Solution

The third proportional to 9,830 and 20,769 is: 43,881.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,830 : 20,769 = 20,769 : x
  2. Step 2: Convert to fraction form
    9,830/20,769 = 20,769/x
  3. Step 3: Cross multiply
    9,830x = 20,769 × 20,769
  4. Step 4: Simplify right side
    9,830x = 431,351,361
  5. Step 5: Solve for x
    x = 431,351,361/9,830
  6. Step 6: Final answer
    x = 43,881.12

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.