Home / 20,745.70-31,082.10-17,027.80

Finding the Fourth Proportional to 20,745.70, 31,082.10 and 17,027.80

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Solution

The fourth proportional to 20,745.70, 31,082.10 and 17,027.80 is: 25,511.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.70 : 31,082.10 = 17,027.80 : x
  2. Step 2: Convert to fraction form
    20,745.70/31,082.10 = 17,027.80/x
  3. Step 3: Cross multiply
    20,745.70x = 31,082.10 × 17,027.80
  4. Step 4: Simplify right side
    20,745.70x = 529,259,782.38
  5. Step 5: Solve for x
    x = 529,259,782.38/20,745.70
  6. Step 6: Final answer
    x = 25,511.78

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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.