Home / 18,721.44-28,046.52-11,679.48

Finding the Fourth Proportional to 18,721.44, 28,046.52 and 11,679.48

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Solution

The fourth proportional to 18,721.44, 28,046.52 and 11,679.48 is: 17,496.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.44 : 28,046.52 = 11,679.48 : x
  2. Step 2: Convert to fraction form
    18,721.44/28,046.52 = 11,679.48/x
  3. Step 3: Cross multiply
    18,721.44x = 28,046.52 × 11,679.48
  4. Step 4: Simplify right side
    18,721.44x = 327,568,769.41
  5. Step 5: Solve for x
    x = 327,568,769.41/18,721.44
  6. Step 6: Final answer
    x = 17,496.99

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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.