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Finding the Fourth Proportional to 13,161.25, 19,745.30 and 3,927.25

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Solution

The fourth proportional to 13,161.25, 19,745.30 and 3,927.25 is: 5,891.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.25 : 19,745.30 = 3,927.25 : x
  2. Step 2: Convert to fraction form
    13,161.25/19,745.30 = 3,927.25/x
  3. Step 3: Cross multiply
    13,161.25x = 19,745.30 × 3,927.25
  4. Step 4: Simplify right side
    13,161.25x = 77,544,729.43
  5. Step 5: Solve for x
    x = 77,544,729.43/13,161.25
  6. Step 6: Final answer
    x = 5,891.90

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