Home / 12,900.11-19,350.19-3,540.26

Finding the Fourth Proportional to 12,900.11, 19,350.19 and 3,540.26

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Solution

The fourth proportional to 12,900.11, 19,350.19 and 3,540.26 is: 5,310.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.11 : 19,350.19 = 3,540.26 : x
  2. Step 2: Convert to fraction form
    12,900.11/19,350.19 = 3,540.26/x
  3. Step 3: Cross multiply
    12,900.11x = 19,350.19 × 3,540.26
  4. Step 4: Simplify right side
    12,900.11x = 68,504,589.20
  5. Step 5: Solve for x
    x = 68,504,589.20/12,900.11
  6. Step 6: Final answer
    x = 5,310.39

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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.