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Finding the Fourth Proportional to 18,091.78, 27,139.39 and 5,611.94

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Solution

The fourth proportional to 18,091.78, 27,139.39 and 5,611.94 is: 8,418.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,091.78 : 27,139.39 = 5,611.94 : x
  2. Step 2: Convert to fraction form
    18,091.78/27,139.39 = 5,611.94/x
  3. Step 3: Cross multiply
    18,091.78x = 27,139.39 × 5,611.94
  4. Step 4: Simplify right side
    18,091.78x = 152,304,628.32
  5. Step 5: Solve for x
    x = 152,304,628.32/18,091.78
  6. Step 6: Final answer
    x = 8,418.44

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