Home / 11,115.82-16,651.05-7,208.38

Finding the Fourth Proportional to 11,115.82, 16,651.05 and 7,208.38

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Solution

The fourth proportional to 11,115.82, 16,651.05 and 7,208.38 is: 10,797.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.82 : 16,651.05 = 7,208.38 : x
  2. Step 2: Convert to fraction form
    11,115.82/16,651.05 = 7,208.38/x
  3. Step 3: Cross multiply
    11,115.82x = 16,651.05 × 7,208.38
  4. Step 4: Simplify right side
    11,115.82x = 120,027,095.80
  5. Step 5: Solve for x
    x = 120,027,095.80/11,115.82
  6. Step 6: Final answer
    x = 10,797.86

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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.