Home / 18,211.32-27,315.72-7,115.88

Finding the Fourth Proportional to 18,211.32, 27,315.72 and 7,115.88

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Solution

The fourth proportional to 18,211.32, 27,315.72 and 7,115.88 is: 10,673.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.32 : 27,315.72 = 7,115.88 : x
  2. Step 2: Convert to fraction form
    18,211.32/27,315.72 = 7,115.88/x
  3. Step 3: Cross multiply
    18,211.32x = 27,315.72 × 7,115.88
  4. Step 4: Simplify right side
    18,211.32x = 194,375,385.63
  5. Step 5: Solve for x
    x = 194,375,385.63/18,211.32
  6. Step 6: Final answer
    x = 10,673.33

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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.