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Finding the Fourth Proportional to 28,367.78, 39,147.48 and 15,795.50

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Solution

The fourth proportional to 28,367.78, 39,147.48 and 15,795.50 is: 21,797.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,367.78 : 39,147.48 = 15,795.50 : x
  2. Step 2: Convert to fraction form
    28,367.78/39,147.48 = 15,795.50/x
  3. Step 3: Cross multiply
    28,367.78x = 39,147.48 × 15,795.50
  4. Step 4: Simplify right side
    28,367.78x = 618,354,020.34
  5. Step 5: Solve for x
    x = 618,354,020.34/28,367.78
  6. Step 6: Final answer
    x = 21,797.76

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