Home / 20,790.39-28,694.24-11,836.65

Finding the Fourth Proportional to 20,790.39, 28,694.24 and 11,836.65

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Solution

The fourth proportional to 20,790.39, 28,694.24 and 11,836.65 is: 16,336.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790.39 : 28,694.24 = 11,836.65 : x
  2. Step 2: Convert to fraction form
    20,790.39/28,694.24 = 11,836.65/x
  3. Step 3: Cross multiply
    20,790.39x = 28,694.24 × 11,836.65
  4. Step 4: Simplify right side
    20,790.39x = 339,643,675.90
  5. Step 5: Solve for x
    x = 339,643,675.90/20,790.39
  6. Step 6: Final answer
    x = 16,336.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.