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Finding the Third Proportional to 13,589 and 21,621

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Solution

The third proportional to 13,589 and 21,621 is: 34,400.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,589 : 21,621 = 21,621 : x
  2. Step 2: Convert to fraction form
    13,589/21,621 = 21,621/x
  3. Step 3: Cross multiply
    13,589x = 21,621 × 21,621
  4. Step 4: Simplify right side
    13,589x = 467,467,641
  5. Step 5: Solve for x
    x = 467,467,641/13,589
  6. Step 6: Final answer
    x = 34,400.44

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.