Home / 11,861.64-16,375.70-8,090.35

Finding the Fourth Proportional to 11,861.64, 16,375.70 and 8,090.35

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Solution

The fourth proportional to 11,861.64, 16,375.70 and 8,090.35 is: 11,169.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.64 : 16,375.70 = 8,090.35 : x
  2. Step 2: Convert to fraction form
    11,861.64/16,375.70 = 8,090.35/x
  3. Step 3: Cross multiply
    11,861.64x = 16,375.70 × 8,090.35
  4. Step 4: Simplify right side
    11,861.64x = 132,485,123.78
  5. Step 5: Solve for x
    x = 132,485,123.78/11,861.64
  6. Step 6: Final answer
    x = 11,169.21

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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.