Home / 28,734.91-43,107.66-12,940.31

Finding the Fourth Proportional to 28,734.91, 43,107.66 and 12,940.31

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Solution

The fourth proportional to 28,734.91, 43,107.66 and 12,940.31 is: 19,412.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,734.91 : 43,107.66 = 12,940.31 : x
  2. Step 2: Convert to fraction form
    28,734.91/43,107.66 = 12,940.31/x
  3. Step 3: Cross multiply
    28,734.91x = 43,107.66 × 12,940.31
  4. Step 4: Simplify right side
    28,734.91x = 557,826,591.54
  5. Step 5: Solve for x
    x = 557,826,591.54/28,734.91
  6. Step 6: Final answer
    x = 19,412.85

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1.5x scale

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.