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Finding the Third Proportional to 20,403 and 38,959.88

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Solution

The third proportional to 20,403 and 38,959.88 is: 74,394.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403 : 38,959.88 = 38,959.88 : x
  2. Step 2: Convert to fraction form
    20,403/38,959.88 = 38,959.88/x
  3. Step 3: Cross multiply
    20,403x = 38,959.88 × 38,959.88
  4. Step 4: Simplify right side
    20,403x = 1,517,871,860.02
  5. Step 5: Solve for x
    x = 1,517,871,860.02/20,403
  6. Step 6: Final answer
    x = 74,394.54

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.