Home / 12,128.74-18,193.11-3,363.73

Finding the Fourth Proportional to 12,128.74, 18,193.11 and 3,363.73

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Solution

The fourth proportional to 12,128.74, 18,193.11 and 3,363.73 is: 5,045.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.74 : 18,193.11 = 3,363.73 : x
  2. Step 2: Convert to fraction form
    12,128.74/18,193.11 = 3,363.73/x
  3. Step 3: Cross multiply
    12,128.74x = 18,193.11 × 3,363.73
  4. Step 4: Simplify right side
    12,128.74x = 61,196,651.80
  5. Step 5: Solve for x
    x = 61,196,651.80/12,128.74
  6. Step 6: Final answer
    x = 5,045.59

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Half scale
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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.