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Finding the Fourth Proportional to 31,330.71, 47,000.57 and 9,141.21

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Solution

The fourth proportional to 31,330.71, 47,000.57 and 9,141.21 is: 13,713.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,330.71 : 47,000.57 = 9,141.21 : x
  2. Step 2: Convert to fraction form
    31,330.71/47,000.57 = 9,141.21/x
  3. Step 3: Cross multiply
    31,330.71x = 47,000.57 × 9,141.21
  4. Step 4: Simplify right side
    31,330.71x = 429,642,034.78
  5. Step 5: Solve for x
    x = 429,642,034.78/31,330.71
  6. Step 6: Final answer
    x = 13,713.13

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