Home / 20,086.20-27,719.19-11,133.81

Finding the Fourth Proportional to 20,086.20, 27,719.19 and 11,133.81

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Solution

The fourth proportional to 20,086.20, 27,719.19 and 11,133.81 is: 15,364.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.20 : 27,719.19 = 11,133.81 : x
  2. Step 2: Convert to fraction form
    20,086.20/27,719.19 = 11,133.81/x
  3. Step 3: Cross multiply
    20,086.20x = 27,719.19 × 11,133.81
  4. Step 4: Simplify right side
    20,086.20x = 308,620,194.81
  5. Step 5: Solve for x
    x = 308,620,194.81/20,086.20
  6. Step 6: Final answer
    x = 15,364.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.