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Finding the Fourth Proportional to 22,221.25, 33,333.09 and 6,640.09

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Solution

The fourth proportional to 22,221.25, 33,333.09 and 6,640.09 is: 9,960.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,221.25 : 33,333.09 = 6,640.09 : x
  2. Step 2: Convert to fraction form
    22,221.25/33,333.09 = 6,640.09/x
  3. Step 3: Cross multiply
    22,221.25x = 33,333.09 × 6,640.09
  4. Step 4: Simplify right side
    22,221.25x = 221,334,717.58
  5. Step 5: Solve for x
    x = 221,334,717.58/22,221.25
  6. Step 6: Final answer
    x = 9,960.50

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Double scale
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Similar ratio
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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.