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Finding the Fourth Proportional to 22,000.40, 33,000.60 and 7,209.80

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Solution

The fourth proportional to 22,000.40, 33,000.60 and 7,209.80 is: 10,814.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,000.40 : 33,000.60 = 7,209.80 : x
  2. Step 2: Convert to fraction form
    22,000.40/33,000.60 = 7,209.80/x
  3. Step 3: Cross multiply
    22,000.40x = 33,000.60 × 7,209.80
  4. Step 4: Simplify right side
    22,000.40x = 237,927,725.88
  5. Step 5: Solve for x
    x = 237,927,725.88/22,000.40
  6. Step 6: Final answer
    x = 10,814.70

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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.