Home / 15,072.31-22,608.12-3,979.78

Finding the Fourth Proportional to 15,072.31, 22,608.12 and 3,979.78

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Solution

The fourth proportional to 15,072.31, 22,608.12 and 3,979.78 is: 5,969.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.31 : 22,608.12 = 3,979.78 : x
  2. Step 2: Convert to fraction form
    15,072.31/22,608.12 = 3,979.78/x
  3. Step 3: Cross multiply
    15,072.31x = 22,608.12 × 3,979.78
  4. Step 4: Simplify right side
    15,072.31x = 89,975,302.22
  5. Step 5: Solve for x
    x = 89,975,302.22/15,072.31
  6. Step 6: Final answer
    x = 5,969.58

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