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Finding the Fourth Proportional to 31,118.80, 42,936.24 and 19,016.16

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Solution

The fourth proportional to 31,118.80, 42,936.24 and 19,016.16 is: 26,237.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,118.80 : 42,936.24 = 19,016.16 : x
  2. Step 2: Convert to fraction form
    31,118.80/42,936.24 = 19,016.16/x
  3. Step 3: Cross multiply
    31,118.80x = 42,936.24 × 19,016.16
  4. Step 4: Simplify right side
    31,118.80x = 816,482,409.64
  5. Step 5: Solve for x
    x = 816,482,409.64/31,118.80
  6. Step 6: Final answer
    x = 26,237.59

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