Home / 20,105.52-27,745.79-11,153.60

Finding the Fourth Proportional to 20,105.52, 27,745.79 and 11,153.60

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Solution

The fourth proportional to 20,105.52, 27,745.79 and 11,153.60 is: 15,392.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.52 : 27,745.79 = 11,153.60 : x
  2. Step 2: Convert to fraction form
    20,105.52/27,745.79 = 11,153.60/x
  3. Step 3: Cross multiply
    20,105.52x = 27,745.79 × 11,153.60
  4. Step 4: Simplify right side
    20,105.52x = 309,465,456.94
  5. Step 5: Solve for x
    x = 309,465,456.94/20,105.52
  6. Step 6: Final answer
    x = 15,392.06

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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.