Home / 12,272.87-18,409.49-3,388.12

Finding the Fourth Proportional to 12,272.87, 18,409.49 and 3,388.12

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Solution

The fourth proportional to 12,272.87, 18,409.49 and 3,388.12 is: 5,082.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,272.87 : 18,409.49 = 3,388.12 : x
  2. Step 2: Convert to fraction form
    12,272.87/18,409.49 = 3,388.12/x
  3. Step 3: Cross multiply
    12,272.87x = 18,409.49 × 3,388.12
  4. Step 4: Simplify right side
    12,272.87x = 62,373,561.26
  5. Step 5: Solve for x
    x = 62,373,561.26/12,272.87
  6. Step 6: Final answer
    x = 5,082.23

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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.