Home / 20,105.08-27,745.92-11,152.04

Finding the Fourth Proportional to 20,105.08, 27,745.92 and 11,152.04

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Solution

The fourth proportional to 20,105.08, 27,745.92 and 11,152.04 is: 15,390.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.08 : 27,745.92 = 11,152.04 : x
  2. Step 2: Convert to fraction form
    20,105.08/27,745.92 = 11,152.04/x
  3. Step 3: Cross multiply
    20,105.08x = 27,745.92 × 11,152.04
  4. Step 4: Simplify right side
    20,105.08x = 309,423,609.68
  5. Step 5: Solve for x
    x = 309,423,609.68/20,105.08
  6. Step 6: Final answer
    x = 15,390.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.