Home / 11,811.11-16,299.37-6,505.91

Finding the Fourth Proportional to 11,811.11, 16,299.37 and 6,505.91

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Solution

The fourth proportional to 11,811.11, 16,299.37 and 6,505.91 is: 8,978.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.11 : 16,299.37 = 6,505.91 : x
  2. Step 2: Convert to fraction form
    11,811.11/16,299.37 = 6,505.91/x
  3. Step 3: Cross multiply
    11,811.11x = 16,299.37 × 6,505.91
  4. Step 4: Simplify right side
    11,811.11x = 106,042,234.28
  5. Step 5: Solve for x
    x = 106,042,234.28/11,811.11
  6. Step 6: Final answer
    x = 8,978.18

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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.