Home / 13,679.32-20,514.19-3,815.95

Finding the Fourth Proportional to 13,679.32, 20,514.19 and 3,815.95

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Solution

The fourth proportional to 13,679.32, 20,514.19 and 3,815.95 is: 5,722.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.32 : 20,514.19 = 3,815.95 : x
  2. Step 2: Convert to fraction form
    13,679.32/20,514.19 = 3,815.95/x
  3. Step 3: Cross multiply
    13,679.32x = 20,514.19 × 3,815.95
  4. Step 4: Simplify right side
    13,679.32x = 78,281,123.33
  5. Step 5: Solve for x
    x = 78,281,123.33/13,679.32
  6. Step 6: Final answer
    x = 5,722.59

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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.