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Finding the Third Proportional to 20,907 and 29,619

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Solution

The third proportional to 20,907 and 29,619 is: 41,961.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907 : 29,619 = 29,619 : x
  2. Step 2: Convert to fraction form
    20,907/29,619 = 29,619/x
  3. Step 3: Cross multiply
    20,907x = 29,619 × 29,619
  4. Step 4: Simplify right side
    20,907x = 877,285,161
  5. Step 5: Solve for x
    x = 877,285,161/20,907
  6. Step 6: Final answer
    x = 41,961.31

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.