Home / 28,920.26-43,391.19-11,402.30

Finding the Fourth Proportional to 28,920.26, 43,391.19 and 11,402.30

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Solution

The fourth proportional to 28,920.26, 43,391.19 and 11,402.30 is: 17,107.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.26 : 43,391.19 = 11,402.30 : x
  2. Step 2: Convert to fraction form
    28,920.26/43,391.19 = 11,402.30/x
  3. Step 3: Cross multiply
    28,920.26x = 43,391.19 × 11,402.30
  4. Step 4: Simplify right side
    28,920.26x = 494,759,516.97
  5. Step 5: Solve for x
    x = 494,759,516.97/28,920.26
  6. Step 6: Final answer
    x = 17,107.71

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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.