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Finding the Fourth Proportional to 31,478.01, 43,429.84 and 17,863.80

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Solution

The fourth proportional to 31,478.01, 43,429.84 and 17,863.80 is: 24,646.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,478.01 : 43,429.84 = 17,863.80 : x
  2. Step 2: Convert to fraction form
    31,478.01/43,429.84 = 17,863.80/x
  3. Step 3: Cross multiply
    31,478.01x = 43,429.84 × 17,863.80
  4. Step 4: Simplify right side
    31,478.01x = 775,821,975.79
  5. Step 5: Solve for x
    x = 775,821,975.79/31,478.01
  6. Step 6: Final answer
    x = 24,646.47

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