Home / 11,887.14-16,391.90-8,305.32

Finding the Fourth Proportional to 11,887.14, 16,391.90 and 8,305.32

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Solution

The fourth proportional to 11,887.14, 16,391.90 and 8,305.32 is: 11,452.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.14 : 16,391.90 = 8,305.32 : x
  2. Step 2: Convert to fraction form
    11,887.14/16,391.90 = 8,305.32/x
  3. Step 3: Cross multiply
    11,887.14x = 16,391.90 × 8,305.32
  4. Step 4: Simplify right side
    11,887.14x = 136,139,974.91
  5. Step 5: Solve for x
    x = 136,139,974.91/11,887.14
  6. Step 6: Final answer
    x = 11,452.71

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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.