Home / 11,439.72-17,161.44-3,540.40

Finding the Fourth Proportional to 11,439.72, 17,161.44 and 3,540.40

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Solution

The fourth proportional to 11,439.72, 17,161.44 and 3,540.40 is: 5,311.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.72 : 17,161.44 = 3,540.40 : x
  2. Step 2: Convert to fraction form
    11,439.72/17,161.44 = 3,540.40/x
  3. Step 3: Cross multiply
    11,439.72x = 17,161.44 × 3,540.40
  4. Step 4: Simplify right side
    11,439.72x = 60,758,362.18
  5. Step 5: Solve for x
    x = 60,758,362.18/11,439.72
  6. Step 6: Final answer
    x = 5,311.18

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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.