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Finding the Fourth Proportional to 28,959.44, 43,438.80 and 8,183.12

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Solution

The fourth proportional to 28,959.44, 43,438.80 and 8,183.12 is: 12,274.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,959.44 : 43,438.80 = 8,183.12 : x
  2. Step 2: Convert to fraction form
    28,959.44/43,438.80 = 8,183.12/x
  3. Step 3: Cross multiply
    28,959.44x = 43,438.80 × 8,183.12
  4. Step 4: Simplify right side
    28,959.44x = 355,464,913.06
  5. Step 5: Solve for x
    x = 355,464,913.06/28,959.44
  6. Step 6: Final answer
    x = 12,274.58

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1.5x scale

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.