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Finding the Fourth Proportional to 13,872.52, 19,144.25 and 7,904.31

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Solution

The fourth proportional to 13,872.52, 19,144.25 and 7,904.31 is: 10,908.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.52 : 19,144.25 = 7,904.31 : x
  2. Step 2: Convert to fraction form
    13,872.52/19,144.25 = 7,904.31/x
  3. Step 3: Cross multiply
    13,872.52x = 19,144.25 × 7,904.31
  4. Step 4: Simplify right side
    13,872.52x = 151,322,086.72
  5. Step 5: Solve for x
    x = 151,322,086.72/13,872.52
  6. Step 6: Final answer
    x = 10,908.05

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