Home / 11,745.20-17,618.70-3,425.34

Finding the Fourth Proportional to 11,745.20, 17,618.70 and 3,425.34

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Solution

The fourth proportional to 11,745.20, 17,618.70 and 3,425.34 is: 5,138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.20 : 17,618.70 = 3,425.34 : x
  2. Step 2: Convert to fraction form
    11,745.20/17,618.70 = 3,425.34/x
  3. Step 3: Cross multiply
    11,745.20x = 17,618.70 × 3,425.34
  4. Step 4: Simplify right side
    11,745.20x = 60,350,037.86
  5. Step 5: Solve for x
    x = 60,350,037.86/11,745.20
  6. Step 6: Final answer
    x = 5,138.27

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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.