Home / 11,211.72-16,819.80-3,814.21

Finding the Fourth Proportional to 11,211.72, 16,819.80 and 3,814.21

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Solution

The fourth proportional to 11,211.72, 16,819.80 and 3,814.21 is: 5,722.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.72 : 16,819.80 = 3,814.21 : x
  2. Step 2: Convert to fraction form
    11,211.72/16,819.80 = 3,814.21/x
  3. Step 3: Cross multiply
    11,211.72x = 16,819.80 × 3,814.21
  4. Step 4: Simplify right side
    11,211.72x = 64,154,249.36
  5. Step 5: Solve for x
    x = 64,154,249.36/11,211.72
  6. Step 6: Final answer
    x = 5,722.07

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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.