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Finding the Fourth Proportional to 28,482.70, 42,724.73 and 8,761.44

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Solution

The fourth proportional to 28,482.70, 42,724.73 and 8,761.44 is: 13,142.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,482.70 : 42,724.73 = 8,761.44 : x
  2. Step 2: Convert to fraction form
    28,482.70/42,724.73 = 8,761.44/x
  3. Step 3: Cross multiply
    28,482.70x = 42,724.73 × 8,761.44
  4. Step 4: Simplify right side
    28,482.70x = 374,330,158.41
  5. Step 5: Solve for x
    x = 374,330,158.41/28,482.70
  6. Step 6: Final answer
    x = 13,142.37

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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.