Home / 18,198.83-27,309.90-11,971.37

Finding the Fourth Proportional to 18,198.83, 27,309.90 and 11,971.37

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Solution

The fourth proportional to 18,198.83, 27,309.90 and 11,971.37 is: 17,964.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,198.83 : 27,309.90 = 11,971.37 : x
  2. Step 2: Convert to fraction form
    18,198.83/27,309.90 = 11,971.37/x
  3. Step 3: Cross multiply
    18,198.83x = 27,309.90 × 11,971.37
  4. Step 4: Simplify right side
    18,198.83x = 326,936,917.56
  5. Step 5: Solve for x
    x = 326,936,917.56/18,198.83
  6. Step 6: Final answer
    x = 17,964.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.