Home / 20,923.04-28,865.44-13,367.41

Finding the Fourth Proportional to 20,923.04, 28,865.44 and 13,367.41

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Solution

The fourth proportional to 20,923.04, 28,865.44 and 13,367.41 is: 18,441.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.04 : 28,865.44 = 13,367.41 : x
  2. Step 2: Convert to fraction form
    20,923.04/28,865.44 = 13,367.41/x
  3. Step 3: Cross multiply
    20,923.04x = 28,865.44 × 13,367.41
  4. Step 4: Simplify right side
    20,923.04x = 385,856,115.86
  5. Step 5: Solve for x
    x = 385,856,115.86/20,923.04
  6. Step 6: Final answer
    x = 18,441.69

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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.