Home / 13,579.99-20,369.19-3,718.54

Finding the Fourth Proportional to 13,579.99, 20,369.19 and 3,718.54

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Solution

The fourth proportional to 13,579.99, 20,369.19 and 3,718.54 is: 5,577.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.99 : 20,369.19 = 3,718.54 : x
  2. Step 2: Convert to fraction form
    13,579.99/20,369.19 = 3,718.54/x
  3. Step 3: Cross multiply
    13,579.99x = 20,369.19 × 3,718.54
  4. Step 4: Simplify right side
    13,579.99x = 75,743,629.19
  5. Step 5: Solve for x
    x = 75,743,629.19/13,579.99
  6. Step 6: Final answer
    x = 5,577.59

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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.