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Finding the Fourth Proportional to 11,751.11, 16,237.99 and 8,558.86

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Solution

The fourth proportional to 11,751.11, 16,237.99 and 8,558.86 is: 11,826.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,751.11 : 16,237.99 = 8,558.86 : x
  2. Step 2: Convert to fraction form
    11,751.11/16,237.99 = 8,558.86/x
  3. Step 3: Cross multiply
    11,751.11x = 16,237.99 × 8,558.86
  4. Step 4: Simplify right side
    11,751.11x = 138,978,601.90
  5. Step 5: Solve for x
    x = 138,978,601.90/11,751.11
  6. Step 6: Final answer
    x = 11,826.85

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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.