Home / 13,906.63-20,853.70-8,286.94

Finding the Fourth Proportional to 13,906.63, 20,853.70 and 8,286.94

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Solution

The fourth proportional to 13,906.63, 20,853.70 and 8,286.94 is: 12,426.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.63 : 20,853.70 = 8,286.94 : x
  2. Step 2: Convert to fraction form
    13,906.63/20,853.70 = 8,286.94/x
  3. Step 3: Cross multiply
    13,906.63x = 20,853.70 × 8,286.94
  4. Step 4: Simplify right side
    13,906.63x = 172,813,360.68
  5. Step 5: Solve for x
    x = 172,813,360.68/13,906.63
  6. Step 6: Final answer
    x = 12,426.69

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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.