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Finding the Fourth Proportional to 20,200.31, 30,294.80 and 7,711.73

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Solution

The fourth proportional to 20,200.31, 30,294.80 and 7,711.73 is: 11,565.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.31 : 30,294.80 = 7,711.73 : x
  2. Step 2: Convert to fraction form
    20,200.31/30,294.80 = 7,711.73/x
  3. Step 3: Cross multiply
    20,200.31x = 30,294.80 × 7,711.73
  4. Step 4: Simplify right side
    20,200.31x = 233,625,279.45
  5. Step 5: Solve for x
    x = 233,625,279.45/20,200.31
  6. Step 6: Final answer
    x = 11,565.43

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