Home / 28,815.64-43,229.58-9,099.88

Finding the Fourth Proportional to 28,815.64, 43,229.58 and 9,099.88

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Solution

The fourth proportional to 28,815.64, 43,229.58 and 9,099.88 is: 13,651.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.64 : 43,229.58 = 9,099.88 : x
  2. Step 2: Convert to fraction form
    28,815.64/43,229.58 = 9,099.88/x
  3. Step 3: Cross multiply
    28,815.64x = 43,229.58 × 9,099.88
  4. Step 4: Simplify right side
    28,815.64x = 393,383,990.45
  5. Step 5: Solve for x
    x = 393,383,990.45/28,815.64
  6. Step 6: Final answer
    x = 13,651.75

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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.