Home / 28,107.09-42,161.22-11,455.61

Finding the Fourth Proportional to 28,107.09, 42,161.22 and 11,455.61

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Solution

The fourth proportional to 28,107.09, 42,161.22 and 11,455.61 is: 17,183.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.09 : 42,161.22 = 11,455.61 : x
  2. Step 2: Convert to fraction form
    28,107.09/42,161.22 = 11,455.61/x
  3. Step 3: Cross multiply
    28,107.09x = 42,161.22 × 11,455.61
  4. Step 4: Simplify right side
    28,107.09x = 482,982,282.64
  5. Step 5: Solve for x
    x = 482,982,282.64/28,107.09
  6. Step 6: Final answer
    x = 17,183.65

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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.