Home / 13,739.77-20,611.01-3,879.14

Finding the Fourth Proportional to 13,739.77, 20,611.01 and 3,879.14

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Solution

The fourth proportional to 13,739.77, 20,611.01 and 3,879.14 is: 5,819.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.77 : 20,611.01 = 3,879.14 : x
  2. Step 2: Convert to fraction form
    13,739.77/20,611.01 = 3,879.14/x
  3. Step 3: Cross multiply
    13,739.77x = 20,611.01 × 3,879.14
  4. Step 4: Simplify right side
    13,739.77x = 79,952,993.33
  5. Step 5: Solve for x
    x = 79,952,993.33/13,739.77
  6. Step 6: Final answer
    x = 5,819.09

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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.