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Finding the Third Proportional to 9,879 and 20,973

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Solution

The third proportional to 9,879 and 20,973 is: 44,525.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879 : 20,973 = 20,973 : x
  2. Step 2: Convert to fraction form
    9,879/20,973 = 20,973/x
  3. Step 3: Cross multiply
    9,879x = 20,973 × 20,973
  4. Step 4: Simplify right side
    9,879x = 439,866,729
  5. Step 5: Solve for x
    x = 439,866,729/9,879
  6. Step 6: Final answer
    x = 44,525.43

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.