Home / 14,115.78-21,183.83-11,375.55

Finding the Fourth Proportional to 14,115.78, 21,183.83 and 11,375.55

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Solution

The fourth proportional to 14,115.78, 21,183.83 and 11,375.55 is: 17,071.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.78 : 21,183.83 = 11,375.55 : x
  2. Step 2: Convert to fraction form
    14,115.78/21,183.83 = 11,375.55/x
  3. Step 3: Cross multiply
    14,115.78x = 21,183.83 × 11,375.55
  4. Step 4: Simplify right side
    14,115.78x = 240,977,660.48
  5. Step 5: Solve for x
    x = 240,977,660.48/14,115.78
  6. Step 6: Final answer
    x = 17,071.51

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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.