Home / 28,489.06-42,734.28-8,767.78

Finding the Fourth Proportional to 28,489.06, 42,734.28 and 8,767.78

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Solution

The fourth proportional to 28,489.06, 42,734.28 and 8,767.78 is: 13,151.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.06 : 42,734.28 = 8,767.78 : x
  2. Step 2: Convert to fraction form
    28,489.06/42,734.28 = 8,767.78/x
  3. Step 3: Cross multiply
    28,489.06x = 42,734.28 × 8,767.78
  4. Step 4: Simplify right side
    28,489.06x = 374,684,765.50
  5. Step 5: Solve for x
    x = 374,684,765.50/28,489.06
  6. Step 6: Final answer
    x = 13,151.88

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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.