Home / 28,880.82-43,317.90-7,819.61

Finding the Fourth Proportional to 28,880.82, 43,317.90 and 7,819.61

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Solution

The fourth proportional to 28,880.82, 43,317.90 and 7,819.61 is: 11,728.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,880.82 : 43,317.90 = 7,819.61 : x
  2. Step 2: Convert to fraction form
    28,880.82/43,317.90 = 7,819.61/x
  3. Step 3: Cross multiply
    28,880.82x = 43,317.90 × 7,819.61
  4. Step 4: Simplify right side
    28,880.82x = 338,728,867.43
  5. Step 5: Solve for x
    x = 338,728,867.43/28,880.82
  6. Step 6: Final answer
    x = 11,728.51

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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.