Home / 38,991.38-53,806.75-21,996.16

Finding the Fourth Proportional to 38,991.38, 53,806.75 and 21,996.16

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Solution

The fourth proportional to 38,991.38, 53,806.75 and 21,996.16 is: 30,353.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,991.38 : 53,806.75 = 21,996.16 : x
  2. Step 2: Convert to fraction form
    38,991.38/53,806.75 = 21,996.16/x
  3. Step 3: Cross multiply
    38,991.38x = 53,806.75 × 21,996.16
  4. Step 4: Simplify right side
    38,991.38x = 1,183,541,692.57
  5. Step 5: Solve for x
    x = 1,183,541,692.57/38,991.38
  6. Step 6: Final answer
    x = 30,353.94

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.