Home / 27,486.32-41,139.23-20,876.09

Finding the Fourth Proportional to 27,486.32, 41,139.23 and 20,876.09

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Solution

The fourth proportional to 27,486.32, 41,139.23 and 20,876.09 is: 31,245.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,486.32 : 41,139.23 = 20,876.09 : x
  2. Step 2: Convert to fraction form
    27,486.32/41,139.23 = 20,876.09/x
  3. Step 3: Cross multiply
    27,486.32x = 41,139.23 × 20,876.09
  4. Step 4: Simplify right side
    27,486.32x = 858,825,957.93
  5. Step 5: Solve for x
    x = 858,825,957.93/27,486.32
  6. Step 6: Final answer
    x = 31,245.58

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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.