Home / 13,912.72-20,869.12-3,524.46

Finding the Fourth Proportional to 13,912.72, 20,869.12 and 3,524.46

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Solution

The fourth proportional to 13,912.72, 20,869.12 and 3,524.46 is: 5,286.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.72 : 20,869.12 = 3,524.46 : x
  2. Step 2: Convert to fraction form
    13,912.72/20,869.12 = 3,524.46/x
  3. Step 3: Cross multiply
    13,912.72x = 20,869.12 × 3,524.46
  4. Step 4: Simplify right side
    13,912.72x = 73,552,378.68
  5. Step 5: Solve for x
    x = 73,552,378.68/13,912.72
  6. Step 6: Final answer
    x = 5,286.70

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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.