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Finding the Third Proportional to 8,979 and 20,973

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Solution

The third proportional to 8,979 and 20,973 is: 48,988.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979 : 20,973 = 20,973 : x
  2. Step 2: Convert to fraction form
    8,979/20,973 = 20,973/x
  3. Step 3: Cross multiply
    8,979x = 20,973 × 20,973
  4. Step 4: Simplify right side
    8,979x = 439,866,729
  5. Step 5: Solve for x
    x = 439,866,729/8,979
  6. Step 6: Final answer
    x = 48,988.39

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.