Home / 10,879.56-16,279.20-6,721.80

Finding the Fourth Proportional to 10,879.56, 16,279.20 and 6,721.80

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Solution

The fourth proportional to 10,879.56, 16,279.20 and 6,721.80 is: 10,057.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.56 : 16,279.20 = 6,721.80 : x
  2. Step 2: Convert to fraction form
    10,879.56/16,279.20 = 6,721.80/x
  3. Step 3: Cross multiply
    10,879.56x = 16,279.20 × 6,721.80
  4. Step 4: Simplify right side
    10,879.56x = 109,425,526.56
  5. Step 5: Solve for x
    x = 109,425,526.56/10,879.56
  6. Step 6: Final answer
    x = 10,057.90

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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.