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Finding the Fourth Proportional to 31,978.80, 47,961.36 and 17,952.48

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Solution

The fourth proportional to 31,978.80, 47,961.36 and 17,952.48 is: 26,924.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,978.80 : 47,961.36 = 17,952.48 : x
  2. Step 2: Convert to fraction form
    31,978.80/47,961.36 = 17,952.48/x
  3. Step 3: Cross multiply
    31,978.80x = 47,961.36 × 17,952.48
  4. Step 4: Simplify right side
    31,978.80x = 861,025,356.17
  5. Step 5: Solve for x
    x = 861,025,356.17/31,978.80
  6. Step 6: Final answer
    x = 26,924.88

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