Home / 11,147.78-16,722.32-4,910.72

Finding the Fourth Proportional to 11,147.78, 16,722.32 and 4,910.72

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Solution

The fourth proportional to 11,147.78, 16,722.32 and 4,910.72 is: 7,366.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.78 : 16,722.32 = 4,910.72 : x
  2. Step 2: Convert to fraction form
    11,147.78/16,722.32 = 4,910.72/x
  3. Step 3: Cross multiply
    11,147.78x = 16,722.32 × 4,910.72
  4. Step 4: Simplify right side
    11,147.78x = 82,118,523.11
  5. Step 5: Solve for x
    x = 82,118,523.11/11,147.78
  6. Step 6: Final answer
    x = 7,366.35

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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.