Home / 19,198.54-28,785.49-13,258.79

Finding the Fourth Proportional to 19,198.54, 28,785.49 and 13,258.79

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Solution

The fourth proportional to 19,198.54, 28,785.49 and 13,258.79 is: 19,879.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,198.54 : 28,785.49 = 13,258.79 : x
  2. Step 2: Convert to fraction form
    19,198.54/28,785.49 = 13,258.79/x
  3. Step 3: Cross multiply
    19,198.54x = 28,785.49 × 13,258.79
  4. Step 4: Simplify right side
    19,198.54x = 381,660,772.41
  5. Step 5: Solve for x
    x = 381,660,772.41/19,198.54
  6. Step 6: Final answer
    x = 19,879.68

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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.