Home / 28,508.49-42,761.70-8,786.61

Finding the Fourth Proportional to 28,508.49, 42,761.70 and 8,786.61

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Solution

The fourth proportional to 28,508.49, 42,761.70 and 8,786.61 is: 13,179.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.49 : 42,761.70 = 8,786.61 : x
  2. Step 2: Convert to fraction form
    28,508.49/42,761.70 = 8,786.61/x
  3. Step 3: Cross multiply
    28,508.49x = 42,761.70 × 8,786.61
  4. Step 4: Simplify right side
    28,508.49x = 375,730,380.84
  5. Step 5: Solve for x
    x = 375,730,380.84/28,508.49
  6. Step 6: Final answer
    x = 13,179.60

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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.