Home / 13,739.76-20,607.77-3,879.83

Finding the Fourth Proportional to 13,739.76, 20,607.77 and 3,879.83

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Solution

The fourth proportional to 13,739.76, 20,607.77 and 3,879.83 is: 5,819.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.76 : 20,607.77 = 3,879.83 : x
  2. Step 2: Convert to fraction form
    13,739.76/20,607.77 = 3,879.83/x
  3. Step 3: Cross multiply
    13,739.76x = 20,607.77 × 3,879.83
  4. Step 4: Simplify right side
    13,739.76x = 79,954,705.50
  5. Step 5: Solve for x
    x = 79,954,705.50/13,739.76
  6. Step 6: Final answer
    x = 5,819.22

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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.