Home / 13,311.43-18,372.97-8,005.22

Finding the Fourth Proportional to 13,311.43, 18,372.97 and 8,005.22

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Solution

The fourth proportional to 13,311.43, 18,372.97 and 8,005.22 is: 11,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.43 : 18,372.97 = 8,005.22 : x
  2. Step 2: Convert to fraction form
    13,311.43/18,372.97 = 8,005.22/x
  3. Step 3: Cross multiply
    13,311.43x = 18,372.97 × 8,005.22
  4. Step 4: Simplify right side
    13,311.43x = 147,079,653.94
  5. Step 5: Solve for x
    x = 147,079,653.94/13,311.43
  6. Step 6: Final answer
    x = 11,049.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.