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Finding the Fourth Proportional to 15,671.97, 21,629.22 and 8,957.88

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Solution

The fourth proportional to 15,671.97, 21,629.22 and 8,957.88 is: 12,362.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,671.97 : 21,629.22 = 8,957.88 : x
  2. Step 2: Convert to fraction form
    15,671.97/21,629.22 = 8,957.88/x
  3. Step 3: Cross multiply
    15,671.97x = 21,629.22 × 8,957.88
  4. Step 4: Simplify right side
    15,671.97x = 193,751,957.25
  5. Step 5: Solve for x
    x = 193,751,957.25/15,671.97
  6. Step 6: Final answer
    x = 12,362.96

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