Home / 12,183.20-16,801.26-8,400.32

Finding the Fourth Proportional to 12,183.20, 16,801.26 and 8,400.32

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Solution

The fourth proportional to 12,183.20, 16,801.26 and 8,400.32 is: 11,584.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.20 : 16,801.26 = 8,400.32 : x
  2. Step 2: Convert to fraction form
    12,183.20/16,801.26 = 8,400.32/x
  3. Step 3: Cross multiply
    12,183.20x = 16,801.26 × 8,400.32
  4. Step 4: Simplify right side
    12,183.20x = 141,135,960.40
  5. Step 5: Solve for x
    x = 141,135,960.40/12,183.20
  6. Step 6: Final answer
    x = 11,584.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.