Home / 11,012.87-16,519.31-3,221.69

Finding the Fourth Proportional to 11,012.87, 16,519.31 and 3,221.69

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Solution

The fourth proportional to 11,012.87, 16,519.31 and 3,221.69 is: 4,832.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,012.87 : 16,519.31 = 3,221.69 : x
  2. Step 2: Convert to fraction form
    11,012.87/16,519.31 = 3,221.69/x
  3. Step 3: Cross multiply
    11,012.87x = 16,519.31 × 3,221.69
  4. Step 4: Simplify right side
    11,012.87x = 53,220,095.83
  5. Step 5: Solve for x
    x = 53,220,095.83/11,012.87
  6. Step 6: Final answer
    x = 4,832.54

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Double scale
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Similar ratio
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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.