Home / 11,078.05-16,612.21-4,147.69

Finding the Fourth Proportional to 11,078.05, 16,612.21 and 4,147.69

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Solution

The fourth proportional to 11,078.05, 16,612.21 and 4,147.69 is: 6,219.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.05 : 16,612.21 = 4,147.69 : x
  2. Step 2: Convert to fraction form
    11,078.05/16,612.21 = 4,147.69/x
  3. Step 3: Cross multiply
    11,078.05x = 16,612.21 × 4,147.69
  4. Step 4: Simplify right side
    11,078.05x = 68,902,245.40
  5. Step 5: Solve for x
    x = 68,902,245.40/11,078.05
  6. Step 6: Final answer
    x = 6,219.71

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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.