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Finding the Fourth Proportional to 13,617.32, 18,787.44 and 7,950.80

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Solution

The fourth proportional to 13,617.32, 18,787.44 and 7,950.80 is: 10,969.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.32 : 18,787.44 = 7,950.80 : x
  2. Step 2: Convert to fraction form
    13,617.32/18,787.44 = 7,950.80/x
  3. Step 3: Cross multiply
    13,617.32x = 18,787.44 × 7,950.80
  4. Step 4: Simplify right side
    13,617.32x = 149,375,177.95
  5. Step 5: Solve for x
    x = 149,375,177.95/13,617.32
  6. Step 6: Final answer
    x = 10,969.50

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