Home / 20,231.12-27,917.89-11,157.97

Finding the Fourth Proportional to 20,231.12, 27,917.89 and 11,157.97

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Solution

The fourth proportional to 20,231.12, 27,917.89 and 11,157.97 is: 15,397.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.12 : 27,917.89 = 11,157.97 : x
  2. Step 2: Convert to fraction form
    20,231.12/27,917.89 = 11,157.97/x
  3. Step 3: Cross multiply
    20,231.12x = 27,917.89 × 11,157.97
  4. Step 4: Simplify right side
    20,231.12x = 311,506,783.70
  5. Step 5: Solve for x
    x = 311,506,783.70/20,231.12
  6. Step 6: Final answer
    x = 15,397.41

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