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Finding the Fourth Proportional to 28,583.58, 42,879.52 and 8,863.73

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Solution

The fourth proportional to 28,583.58, 42,879.52 and 8,863.73 is: 13,296.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,583.58 : 42,879.52 = 8,863.73 : x
  2. Step 2: Convert to fraction form
    28,583.58/42,879.52 = 8,863.73/x
  3. Step 3: Cross multiply
    28,583.58x = 42,879.52 × 8,863.73
  4. Step 4: Simplify right side
    28,583.58x = 380,072,273.41
  5. Step 5: Solve for x
    x = 380,072,273.41/28,583.58
  6. Step 6: Final answer
    x = 13,296.87

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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.