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Finding the Fourth Proportional to 30,865.60, 46,372.20 and 19,793.98

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Solution

The fourth proportional to 30,865.60, 46,372.20 and 19,793.98 is: 29,738.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,865.60 : 46,372.20 = 19,793.98 : x
  2. Step 2: Convert to fraction form
    30,865.60/46,372.20 = 19,793.98/x
  3. Step 3: Cross multiply
    30,865.60x = 46,372.20 × 19,793.98
  4. Step 4: Simplify right side
    30,865.60x = 917,890,399.36
  5. Step 5: Solve for x
    x = 917,890,399.36/30,865.60
  6. Step 6: Final answer
    x = 29,738.30

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