Home / 14,818.55-20,450.15-8,103.78

Finding the Fourth Proportional to 14,818.55, 20,450.15 and 8,103.78

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Solution

The fourth proportional to 14,818.55, 20,450.15 and 8,103.78 is: 11,183.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,818.55 : 20,450.15 = 8,103.78 : x
  2. Step 2: Convert to fraction form
    14,818.55/20,450.15 = 8,103.78/x
  3. Step 3: Cross multiply
    14,818.55x = 20,450.15 × 8,103.78
  4. Step 4: Simplify right side
    14,818.55x = 165,723,516.57
  5. Step 5: Solve for x
    x = 165,723,516.57/14,818.55
  6. Step 6: Final answer
    x = 11,183.52

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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.