Home / 11,520.22-17,280.64-3,200.26

Finding the Fourth Proportional to 11,520.22, 17,280.64 and 3,200.26

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Solution

The fourth proportional to 11,520.22, 17,280.64 and 3,200.26 is: 4,800.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.22 : 17,280.64 = 3,200.26 : x
  2. Step 2: Convert to fraction form
    11,520.22/17,280.64 = 3,200.26/x
  3. Step 3: Cross multiply
    11,520.22x = 17,280.64 × 3,200.26
  4. Step 4: Simplify right side
    11,520.22x = 55,302,540.97
  5. Step 5: Solve for x
    x = 55,302,540.97/11,520.22
  6. Step 6: Final answer
    x = 4,800.48

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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.