Home / 28,912.68-43,364.16-8,136.72

Finding the Fourth Proportional to 28,912.68, 43,364.16 and 8,136.72

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Solution

The fourth proportional to 28,912.68, 43,364.16 and 8,136.72 is: 12,203.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.68 : 43,364.16 = 8,136.72 : x
  2. Step 2: Convert to fraction form
    28,912.68/43,364.16 = 8,136.72/x
  3. Step 3: Cross multiply
    28,912.68x = 43,364.16 × 8,136.72
  4. Step 4: Simplify right side
    28,912.68x = 352,842,027.96
  5. Step 5: Solve for x
    x = 352,842,027.96/28,912.68
  6. Step 6: Final answer
    x = 12,203.71

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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.