Home / 11,121.78-16,682.72-3,330.60

Finding the Fourth Proportional to 11,121.78, 16,682.72 and 3,330.60

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Solution

The fourth proportional to 11,121.78, 16,682.72 and 3,330.60 is: 4,995.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.78 : 16,682.72 = 3,330.60 : x
  2. Step 2: Convert to fraction form
    11,121.78/16,682.72 = 3,330.60/x
  3. Step 3: Cross multiply
    11,121.78x = 16,682.72 × 3,330.60
  4. Step 4: Simplify right side
    11,121.78x = 55,563,467.23
  5. Step 5: Solve for x
    x = 55,563,467.23/11,121.78
  6. Step 6: Final answer
    x = 4,995.91

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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.