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Finding the Fourth Proportional to 30,727.80, 42,403.50 and 18,792.12

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Solution

The fourth proportional to 30,727.80, 42,403.50 and 18,792.12 is: 25,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,727.80 : 42,403.50 = 18,792.12 : x
  2. Step 2: Convert to fraction form
    30,727.80/42,403.50 = 18,792.12/x
  3. Step 3: Cross multiply
    30,727.80x = 42,403.50 × 18,792.12
  4. Step 4: Simplify right side
    30,727.80x = 796,851,660.42
  5. Step 5: Solve for x
    x = 796,851,660.42/30,727.80
  6. Step 6: Final answer
    x = 25,932.60

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