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Finding the Fourth Proportional to 31,354.92, 47,032.20 and 7,983.18

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Solution

The fourth proportional to 31,354.92, 47,032.20 and 7,983.18 is: 11,974.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,354.92 : 47,032.20 = 7,983.18 : x
  2. Step 2: Convert to fraction form
    31,354.92/47,032.20 = 7,983.18/x
  3. Step 3: Cross multiply
    31,354.92x = 47,032.20 × 7,983.18
  4. Step 4: Simplify right side
    31,354.92x = 375,466,518.40
  5. Step 5: Solve for x
    x = 375,466,518.40/31,354.92
  6. Step 6: Final answer
    x = 11,974.72

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