Home / 10,720.20-16,082.20-3,699.66

Finding the Fourth Proportional to 10,720.20, 16,082.20 and 3,699.66

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Solution

The fourth proportional to 10,720.20, 16,082.20 and 3,699.66 is: 5,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.20 : 16,082.20 = 3,699.66 : x
  2. Step 2: Convert to fraction form
    10,720.20/16,082.20 = 3,699.66/x
  3. Step 3: Cross multiply
    10,720.20x = 16,082.20 × 3,699.66
  4. Step 4: Simplify right side
    10,720.20x = 59,498,672.05
  5. Step 5: Solve for x
    x = 59,498,672.05/10,720.20
  6. Step 6: Final answer
    x = 5,550.15

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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.