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Finding the Fourth Proportional to 28,175.52, 42,250.80 and 8,447.52

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Solution

The fourth proportional to 28,175.52, 42,250.80 and 8,447.52 is: 12,667.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.52 : 42,250.80 = 8,447.52 : x
  2. Step 2: Convert to fraction form
    28,175.52/42,250.80 = 8,447.52/x
  3. Step 3: Cross multiply
    28,175.52x = 42,250.80 × 8,447.52
  4. Step 4: Simplify right side
    28,175.52x = 356,914,478.02
  5. Step 5: Solve for x
    x = 356,914,478.02/28,175.52
  6. Step 6: Final answer
    x = 12,667.54

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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.