Home / 11,279.32-16,920.11-3,882.80

Finding the Fourth Proportional to 11,279.32, 16,920.11 and 3,882.80

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Solution

The fourth proportional to 11,279.32, 16,920.11 and 3,882.80 is: 5,824.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.32 : 16,920.11 = 3,882.80 : x
  2. Step 2: Convert to fraction form
    11,279.32/16,920.11 = 3,882.80/x
  3. Step 3: Cross multiply
    11,279.32x = 16,920.11 × 3,882.80
  4. Step 4: Simplify right side
    11,279.32x = 65,697,403.11
  5. Step 5: Solve for x
    x = 65,697,403.11/11,279.32
  6. Step 6: Final answer
    x = 5,824.59

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1.5x scale

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.