Home / 12,286.44-18,429.60-3,521.40

Finding the Fourth Proportional to 12,286.44, 18,429.60 and 3,521.40

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Solution

The fourth proportional to 12,286.44, 18,429.60 and 3,521.40 is: 5,282.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.44 : 18,429.60 = 3,521.40 : x
  2. Step 2: Convert to fraction form
    12,286.44/18,429.60 = 3,521.40/x
  3. Step 3: Cross multiply
    12,286.44x = 18,429.60 × 3,521.40
  4. Step 4: Simplify right side
    12,286.44x = 64,897,993.44
  5. Step 5: Solve for x
    x = 64,897,993.44/12,286.44
  6. Step 6: Final answer
    x = 5,282.08

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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.