Home / 19,105.88-28,618.42-12,082.28

Finding the Fourth Proportional to 19,105.88, 28,618.42 and 12,082.28

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Solution

The fourth proportional to 19,105.88, 28,618.42 and 12,082.28 is: 18,097.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,105.88 : 28,618.42 = 12,082.28 : x
  2. Step 2: Convert to fraction form
    19,105.88/28,618.42 = 12,082.28/x
  3. Step 3: Cross multiply
    19,105.88x = 28,618.42 × 12,082.28
  4. Step 4: Simplify right side
    19,105.88x = 345,775,763.60
  5. Step 5: Solve for x
    x = 345,775,763.60/19,105.88
  6. Step 6: Final answer
    x = 18,097.87

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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.