Home / 11,518.56-17,273.34-4,120.80

Finding the Fourth Proportional to 11,518.56, 17,273.34 and 4,120.80

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Solution

The fourth proportional to 11,518.56, 17,273.34 and 4,120.80 is: 6,179.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,518.56 : 17,273.34 = 4,120.80 : x
  2. Step 2: Convert to fraction form
    11,518.56/17,273.34 = 4,120.80/x
  3. Step 3: Cross multiply
    11,518.56x = 17,273.34 × 4,120.80
  4. Step 4: Simplify right side
    11,518.56x = 71,179,979.47
  5. Step 5: Solve for x
    x = 71,179,979.47/11,518.56
  6. Step 6: Final answer
    x = 6,179.59

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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.