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Finding the Fourth Proportional to 31,286.91, 46,930.52 and 7,913.37

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Solution

The fourth proportional to 31,286.91, 46,930.52 and 7,913.37 is: 11,870.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,286.91 : 46,930.52 = 7,913.37 : x
  2. Step 2: Convert to fraction form
    31,286.91/46,930.52 = 7,913.37/x
  3. Step 3: Cross multiply
    31,286.91x = 46,930.52 × 7,913.37
  4. Step 4: Simplify right side
    31,286.91x = 371,378,569.05
  5. Step 5: Solve for x
    x = 371,378,569.05/31,286.91
  6. Step 6: Final answer
    x = 11,870.09

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