Home / 20,105.24-27,745.14-11,152.76

Finding the Fourth Proportional to 20,105.24, 27,745.14 and 11,152.76

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Solution

The fourth proportional to 20,105.24, 27,745.14 and 11,152.76 is: 15,390.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.24 : 27,745.14 = 11,152.76 : x
  2. Step 2: Convert to fraction form
    20,105.24/27,745.14 = 11,152.76/x
  3. Step 3: Cross multiply
    20,105.24x = 27,745.14 × 11,152.76
  4. Step 4: Simplify right side
    20,105.24x = 309,434,887.59
  5. Step 5: Solve for x
    x = 309,434,887.59/20,105.24
  6. Step 6: Final answer
    x = 15,390.76

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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.