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Finding the Fourth Proportional to 13,944.62, 19,244.72 and 7,978.23

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Solution

The fourth proportional to 13,944.62, 19,244.72 and 7,978.23 is: 11,010.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,944.62 : 19,244.72 = 7,978.23 : x
  2. Step 2: Convert to fraction form
    13,944.62/19,244.72 = 7,978.23/x
  3. Step 3: Cross multiply
    13,944.62x = 19,244.72 × 7,978.23
  4. Step 4: Simplify right side
    13,944.62x = 153,538,822.39
  5. Step 5: Solve for x
    x = 153,538,822.39/13,944.62
  6. Step 6: Final answer
    x = 11,010.61

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