Home / 20,895.76-31,356.60-18,744.40

Finding the Fourth Proportional to 20,895.76, 31,356.60 and 18,744.40

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Solution

The fourth proportional to 20,895.76, 31,356.60 and 18,744.40 is: 28,128.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.76 : 31,356.60 = 18,744.40 : x
  2. Step 2: Convert to fraction form
    20,895.76/31,356.60 = 18,744.40/x
  3. Step 3: Cross multiply
    20,895.76x = 31,356.60 × 18,744.40
  4. Step 4: Simplify right side
    20,895.76x = 587,760,653.04
  5. Step 5: Solve for x
    x = 587,760,653.04/20,895.76
  6. Step 6: Final answer
    x = 28,128.23

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