Home / 20,321.26-28,037.93-13,949.80

Finding the Fourth Proportional to 20,321.26, 28,037.93 and 13,949.80

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Solution

The fourth proportional to 20,321.26, 28,037.93 and 13,949.80 is: 19,247.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.26 : 28,037.93 = 13,949.80 : x
  2. Step 2: Convert to fraction form
    20,321.26/28,037.93 = 13,949.80/x
  3. Step 3: Cross multiply
    20,321.26x = 28,037.93 × 13,949.80
  4. Step 4: Simplify right side
    20,321.26x = 391,123,375.72
  5. Step 5: Solve for x
    x = 391,123,375.72/20,321.26
  6. Step 6: Final answer
    x = 19,247.01

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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.