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Finding the Fourth Proportional to 28,568.02, 42,841.98 and 8,571.54

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Solution

The fourth proportional to 28,568.02, 42,841.98 and 8,571.54 is: 12,854.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,568.02 : 42,841.98 = 8,571.54 : x
  2. Step 2: Convert to fraction form
    28,568.02/42,841.98 = 8,571.54/x
  3. Step 3: Cross multiply
    28,568.02x = 42,841.98 × 8,571.54
  4. Step 4: Simplify right side
    28,568.02x = 367,221,745.25
  5. Step 5: Solve for x
    x = 367,221,745.25/28,568.02
  6. Step 6: Final answer
    x = 12,854.29

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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.