Home / 28,917.12-43,371.84-8,142.24

Finding the Fourth Proportional to 28,917.12, 43,371.84 and 8,142.24

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Solution

The fourth proportional to 28,917.12, 43,371.84 and 8,142.24 is: 12,212.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.12 : 43,371.84 = 8,142.24 : x
  2. Step 2: Convert to fraction form
    28,917.12/43,371.84 = 8,142.24/x
  3. Step 3: Cross multiply
    28,917.12x = 43,371.84 × 8,142.24
  4. Step 4: Simplify right side
    28,917.12x = 353,143,930.52
  5. Step 5: Solve for x
    x = 353,143,930.52/28,917.12
  6. Step 6: Final answer
    x = 12,212.28

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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.