Home / 11,208.39-15,469.43-8,550.78

Finding the Fourth Proportional to 11,208.39, 15,469.43 and 8,550.78

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Solution

The fourth proportional to 11,208.39, 15,469.43 and 8,550.78 is: 11,801.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,208.39 : 15,469.43 = 8,550.78 : x
  2. Step 2: Convert to fraction form
    11,208.39/15,469.43 = 8,550.78/x
  3. Step 3: Cross multiply
    11,208.39x = 15,469.43 × 8,550.78
  4. Step 4: Simplify right side
    11,208.39x = 132,275,692.66
  5. Step 5: Solve for x
    x = 132,275,692.66/11,208.39
  6. Step 6: Final answer
    x = 11,801.49

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Half scale
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Double scale
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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.