Home / 11,078.14-16,612.35-4,147.78

Finding the Fourth Proportional to 11,078.14, 16,612.35 and 4,147.78

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Solution

The fourth proportional to 11,078.14, 16,612.35 and 4,147.78 is: 6,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.14 : 16,612.35 = 4,147.78 : x
  2. Step 2: Convert to fraction form
    11,078.14/16,612.35 = 4,147.78/x
  3. Step 3: Cross multiply
    11,078.14x = 16,612.35 × 4,147.78
  4. Step 4: Simplify right side
    11,078.14x = 68,904,393.85
  5. Step 5: Solve for x
    x = 68,904,393.85/11,078.14
  6. Step 6: Final answer
    x = 6,219.85

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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.