Home / 20,716.38-28,590.44-11,766.69

Finding the Fourth Proportional to 20,716.38, 28,590.44 and 11,766.69

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Solution

The fourth proportional to 20,716.38, 28,590.44 and 11,766.69 is: 16,239.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.38 : 28,590.44 = 11,766.69 : x
  2. Step 2: Convert to fraction form
    20,716.38/28,590.44 = 11,766.69/x
  3. Step 3: Cross multiply
    20,716.38x = 28,590.44 × 11,766.69
  4. Step 4: Simplify right side
    20,716.38x = 336,414,785.61
  5. Step 5: Solve for x
    x = 336,414,785.61/20,716.38
  6. Step 6: Final answer
    x = 16,239.07

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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.