Home / 12,425.05-18,638.59-3,540.36

Finding the Fourth Proportional to 12,425.05, 18,638.59 and 3,540.36

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Solution

The fourth proportional to 12,425.05, 18,638.59 and 3,540.36 is: 5,310.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.05 : 18,638.59 = 3,540.36 : x
  2. Step 2: Convert to fraction form
    12,425.05/18,638.59 = 3,540.36/x
  3. Step 3: Cross multiply
    12,425.05x = 18,638.59 × 3,540.36
  4. Step 4: Simplify right side
    12,425.05x = 65,987,318.49
  5. Step 5: Solve for x
    x = 65,987,318.49/12,425.05
  6. Step 6: Final answer
    x = 5,310.83

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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.