Home / 13,986.10-20,979.12-4,125.48

Finding the Fourth Proportional to 13,986.10, 20,979.12 and 4,125.48

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Solution

The fourth proportional to 13,986.10, 20,979.12 and 4,125.48 is: 6,188.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.10 : 20,979.12 = 4,125.48 : x
  2. Step 2: Convert to fraction form
    13,986.10/20,979.12 = 4,125.48/x
  3. Step 3: Cross multiply
    13,986.10x = 20,979.12 × 4,125.48
  4. Step 4: Simplify right side
    13,986.10x = 86,548,939.98
  5. Step 5: Solve for x
    x = 86,548,939.98/13,986.10
  6. Step 6: Final answer
    x = 6,188.21

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