Home / 11,520.27-17,280.74-3,200.90

Finding the Fourth Proportional to 11,520.27, 17,280.74 and 3,200.90

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Solution

The fourth proportional to 11,520.27, 17,280.74 and 3,200.90 is: 4,801.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.27 : 17,280.74 = 3,200.90 : x
  2. Step 2: Convert to fraction form
    11,520.27/17,280.74 = 3,200.90/x
  3. Step 3: Cross multiply
    11,520.27x = 17,280.74 × 3,200.90
  4. Step 4: Simplify right side
    11,520.27x = 55,313,818.26
  5. Step 5: Solve for x
    x = 55,313,818.26/11,520.27
  6. Step 6: Final answer
    x = 4,801.43

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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.