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Finding the Third Proportional to 8,959.50 and 20,921.63

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Solution

The third proportional to 8,959.50 and 20,921.63 is: 48,854.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.50 : 20,921.63 = 20,921.63 : x
  2. Step 2: Convert to fraction form
    8,959.50/20,921.63 = 20,921.63/x
  3. Step 3: Cross multiply
    8,959.50x = 20,921.63 × 20,921.63
  4. Step 4: Simplify right side
    8,959.50x = 437,714,392.64
  5. Step 5: Solve for x
    x = 437,714,392.64/8,959.50
  6. Step 6: Final answer
    x = 48,854.78

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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.