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Finding the Fourth Proportional to 39,898.52, 55,059.66 and 21,993.54

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Solution

The fourth proportional to 39,898.52, 55,059.66 and 21,993.54 is: 30,350.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,898.52 : 55,059.66 = 21,993.54 : x
  2. Step 2: Convert to fraction form
    39,898.52/55,059.66 = 21,993.54/x
  3. Step 3: Cross multiply
    39,898.52x = 55,059.66 × 21,993.54
  4. Step 4: Simplify right side
    39,898.52x = 1,210,956,834.60
  5. Step 5: Solve for x
    x = 1,210,956,834.60/39,898.52
  6. Step 6: Final answer
    x = 30,350.92

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