Home / 11,945.70-17,919.36-3,180.42

Finding the Fourth Proportional to 11,945.70, 17,919.36 and 3,180.42

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Solution

The fourth proportional to 11,945.70, 17,919.36 and 3,180.42 is: 4,770.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.70 : 17,919.36 = 3,180.42 : x
  2. Step 2: Convert to fraction form
    11,945.70/17,919.36 = 3,180.42/x
  3. Step 3: Cross multiply
    11,945.70x = 17,919.36 × 3,180.42
  4. Step 4: Simplify right side
    11,945.70x = 56,991,090.93
  5. Step 5: Solve for x
    x = 56,991,090.93/11,945.70
  6. Step 6: Final answer
    x = 4,770.85

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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.