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Finding the Fourth Proportional to 19,760.55, 29,629.88 and 8,081.97

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Solution

The fourth proportional to 19,760.55, 29,629.88 and 8,081.97 is: 12,118.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,760.55 : 29,629.88 = 8,081.97 : x
  2. Step 2: Convert to fraction form
    19,760.55/29,629.88 = 8,081.97/x
  3. Step 3: Cross multiply
    19,760.55x = 29,629.88 × 8,081.97
  4. Step 4: Simplify right side
    19,760.55x = 239,467,801.26
  5. Step 5: Solve for x
    x = 239,467,801.26/19,760.55
  6. Step 6: Final answer
    x = 12,118.48

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