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Finding the Fourth Proportional to 28,482.77, 42,724.83 and 8,761.49

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Solution

The fourth proportional to 28,482.77, 42,724.83 and 8,761.49 is: 13,142.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,482.77 : 42,724.83 = 8,761.49 : x
  2. Step 2: Convert to fraction form
    28,482.77/42,724.83 = 8,761.49/x
  3. Step 3: Cross multiply
    28,482.77x = 42,724.83 × 8,761.49
  4. Step 4: Simplify right side
    28,482.77x = 374,332,957.17
  5. Step 5: Solve for x
    x = 374,332,957.17/28,482.77
  6. Step 6: Final answer
    x = 13,142.44

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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.