Home / 12,290.12-18,435.82-3,524.20

Finding the Fourth Proportional to 12,290.12, 18,435.82 and 3,524.20

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Solution

The fourth proportional to 12,290.12, 18,435.82 and 3,524.20 is: 5,286.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.12 : 18,435.82 = 3,524.20 : x
  2. Step 2: Convert to fraction form
    12,290.12/18,435.82 = 3,524.20/x
  3. Step 3: Cross multiply
    12,290.12x = 18,435.82 × 3,524.20
  4. Step 4: Simplify right side
    12,290.12x = 64,971,516.84
  5. Step 5: Solve for x
    x = 64,971,516.84/12,290.12
  6. Step 6: Final answer
    x = 5,286.48

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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.