Home / 13,922.87-20,879.44-5,600.72

Finding the Fourth Proportional to 13,922.87, 20,879.44 and 5,600.72

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Solution

The fourth proportional to 13,922.87, 20,879.44 and 5,600.72 is: 8,399.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,922.87 : 20,879.44 = 5,600.72 : x
  2. Step 2: Convert to fraction form
    13,922.87/20,879.44 = 5,600.72/x
  3. Step 3: Cross multiply
    13,922.87x = 20,879.44 × 5,600.72
  4. Step 4: Simplify right side
    13,922.87x = 116,939,974.54
  5. Step 5: Solve for x
    x = 116,939,974.54/13,922.87
  6. Step 6: Final answer
    x = 8,399.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.