Home / 38,286.83-57,430.25-11,993.63

Finding the Fourth Proportional to 38,286.83, 57,430.25 and 11,993.63

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Solution

The fourth proportional to 38,286.83, 57,430.25 and 11,993.63 is: 17,990.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,286.83 : 57,430.25 = 11,993.63 : x
  2. Step 2: Convert to fraction form
    38,286.83/57,430.25 = 11,993.63/x
  3. Step 3: Cross multiply
    38,286.83x = 57,430.25 × 11,993.63
  4. Step 4: Simplify right side
    38,286.83x = 688,796,912.14
  5. Step 5: Solve for x
    x = 688,796,912.14/38,286.83
  6. Step 6: Final answer
    x = 17,990.44

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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.