Home / 10,722.78-16,082.21-4,481.12

Finding the Fourth Proportional to 10,722.78, 16,082.21 and 4,481.12

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Solution

The fourth proportional to 10,722.78, 16,082.21 and 4,481.12 is: 6,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,722.78 : 16,082.21 = 4,481.12 : x
  2. Step 2: Convert to fraction form
    10,722.78/16,082.21 = 4,481.12/x
  3. Step 3: Cross multiply
    10,722.78x = 16,082.21 × 4,481.12
  4. Step 4: Simplify right side
    10,722.78x = 72,066,364.28
  5. Step 5: Solve for x
    x = 72,066,364.28/10,722.78
  6. Step 6: Final answer
    x = 6,720.87

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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.