Home / 20,923.24-28,865.71-13,367.61

Finding the Fourth Proportional to 20,923.24, 28,865.71 and 13,367.61

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Solution

The fourth proportional to 20,923.24, 28,865.71 and 13,367.61 is: 18,441.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.24 : 28,865.71 = 13,367.61 : x
  2. Step 2: Convert to fraction form
    20,923.24/28,865.71 = 13,367.61/x
  3. Step 3: Cross multiply
    20,923.24x = 28,865.71 × 13,367.61
  4. Step 4: Simplify right side
    20,923.24x = 385,865,553.65
  5. Step 5: Solve for x
    x = 385,865,553.65/20,923.24
  6. Step 6: Final answer
    x = 18,441.96

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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.