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Finding the Third Proportional to 8,908 and 20,620

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Solution

The third proportional to 8,908 and 20,620 is: 47,730.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908 : 20,620 = 20,620 : x
  2. Step 2: Convert to fraction form
    8,908/20,620 = 20,620/x
  3. Step 3: Cross multiply
    8,908x = 20,620 × 20,620
  4. Step 4: Simplify right side
    8,908x = 425,184,400
  5. Step 5: Solve for x
    x = 425,184,400/8,908
  6. Step 6: Final answer
    x = 47,730.62

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.