Home / 13,451.94-18,560.97-7,861.86

Finding the Fourth Proportional to 13,451.94, 18,560.97 and 7,861.86

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Solution

The fourth proportional to 13,451.94, 18,560.97 and 7,861.86 is: 10,847.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.94 : 18,560.97 = 7,861.86 : x
  2. Step 2: Convert to fraction form
    13,451.94/18,560.97 = 7,861.86/x
  3. Step 3: Cross multiply
    13,451.94x = 18,560.97 × 7,861.86
  4. Step 4: Simplify right side
    13,451.94x = 145,923,747.60
  5. Step 5: Solve for x
    x = 145,923,747.60/13,451.94
  6. Step 6: Final answer
    x = 10,847.78

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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.