Home / 27,768.76-38,321.52-15,193.54

Finding the Fourth Proportional to 27,768.76, 38,321.52 and 15,193.54

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Solution

The fourth proportional to 27,768.76, 38,321.52 and 15,193.54 is: 20,967.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,768.76 : 38,321.52 = 15,193.54 : x
  2. Step 2: Convert to fraction form
    27,768.76/38,321.52 = 15,193.54/x
  3. Step 3: Cross multiply
    27,768.76x = 38,321.52 × 15,193.54
  4. Step 4: Simplify right side
    27,768.76x = 582,239,546.98
  5. Step 5: Solve for x
    x = 582,239,546.98/27,768.76
  6. Step 6: Final answer
    x = 20,967.43

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Double scale
Find fourth proportional to 27,769.76, 38,322.90 and 15,194.54
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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.