Home / 20,087.14-27,719.78-11,589.28

Finding the Fourth Proportional to 20,087.14, 27,719.78 and 11,589.28

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Solution

The fourth proportional to 20,087.14, 27,719.78 and 11,589.28 is: 15,992.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.14 : 27,719.78 = 11,589.28 : x
  2. Step 2: Convert to fraction form
    20,087.14/27,719.78 = 11,589.28/x
  3. Step 3: Cross multiply
    20,087.14x = 27,719.78 × 11,589.28
  4. Step 4: Simplify right side
    20,087.14x = 321,252,291.96
  5. Step 5: Solve for x
    x = 321,252,291.96/20,087.14
  6. Step 6: Final answer
    x = 15,992.93

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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.