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Finding the Fourth Proportional to 31,133.50, 42,964.23 and 19,955.50

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Solution

The fourth proportional to 31,133.50, 42,964.23 and 19,955.50 is: 27,538.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,133.50 : 42,964.23 = 19,955.50 : x
  2. Step 2: Convert to fraction form
    31,133.50/42,964.23 = 19,955.50/x
  3. Step 3: Cross multiply
    31,133.50x = 42,964.23 × 19,955.50
  4. Step 4: Simplify right side
    31,133.50x = 857,372,691.77
  5. Step 5: Solve for x
    x = 857,372,691.77/31,133.50
  6. Step 6: Final answer
    x = 27,538.59

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