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Finding the Third Proportional to 8,998 and 13,621

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Solution

The third proportional to 8,998 and 13,621 is: 20,619.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998 : 13,621 = 13,621 : x
  2. Step 2: Convert to fraction form
    8,998/13,621 = 13,621/x
  3. Step 3: Cross multiply
    8,998x = 13,621 × 13,621
  4. Step 4: Simplify right side
    8,998x = 185,531,641
  5. Step 5: Solve for x
    x = 185,531,641/8,998
  6. Step 6: Final answer
    x = 20,619.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.