Home / 13,183.72-19,778.14-3,949.80

Finding the Fourth Proportional to 13,183.72, 19,778.14 and 3,949.80

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Solution

The fourth proportional to 13,183.72, 19,778.14 and 3,949.80 is: 5,925.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.72 : 19,778.14 = 3,949.80 : x
  2. Step 2: Convert to fraction form
    13,183.72/19,778.14 = 3,949.80/x
  3. Step 3: Cross multiply
    13,183.72x = 19,778.14 × 3,949.80
  4. Step 4: Simplify right side
    13,183.72x = 78,119,697.37
  5. Step 5: Solve for x
    x = 78,119,697.37/13,183.72
  6. Step 6: Final answer
    x = 5,925.47

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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.