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Finding the Fourth Proportional to 20,272.86, 27,964.90 and 12,200.94

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Solution

The fourth proportional to 20,272.86, 27,964.90 and 12,200.94 is: 16,830.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.86 : 27,964.90 = 12,200.94 : x
  2. Step 2: Convert to fraction form
    20,272.86/27,964.90 = 12,200.94/x
  3. Step 3: Cross multiply
    20,272.86x = 27,964.90 × 12,200.94
  4. Step 4: Simplify right side
    20,272.86x = 341,198,067.01
  5. Step 5: Solve for x
    x = 341,198,067.01/20,272.86
  6. Step 6: Final answer
    x = 16,830.29

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