Home / 28,986.26-43,470.68-11,213.78

Finding the Fourth Proportional to 28,986.26, 43,470.68 and 11,213.78

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Solution

The fourth proportional to 28,986.26, 43,470.68 and 11,213.78 is: 16,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,986.26 : 43,470.68 = 11,213.78 : x
  2. Step 2: Convert to fraction form
    28,986.26/43,470.68 = 11,213.78/x
  3. Step 3: Cross multiply
    28,986.26x = 43,470.68 × 11,213.78
  4. Step 4: Simplify right side
    28,986.26x = 487,470,641.97
  5. Step 5: Solve for x
    x = 487,470,641.97/28,986.26
  6. Step 6: Final answer
    x = 16,817.30

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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.