Home / 13,919.12-20,865.36-5,151.68

Finding the Fourth Proportional to 13,919.12, 20,865.36 and 5,151.68

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Solution

The fourth proportional to 13,919.12, 20,865.36 and 5,151.68 is: 7,722.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.12 : 20,865.36 = 5,151.68 : x
  2. Step 2: Convert to fraction form
    13,919.12/20,865.36 = 5,151.68/x
  3. Step 3: Cross multiply
    13,919.12x = 20,865.36 × 5,151.68
  4. Step 4: Simplify right side
    13,919.12x = 107,491,657.80
  5. Step 5: Solve for x
    x = 107,491,657.80/13,919.12
  6. Step 6: Final answer
    x = 7,722.59

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