Home / 11,921.45-16,450.38-6,887.27

Finding the Fourth Proportional to 11,921.45, 16,450.38 and 6,887.27

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Solution

The fourth proportional to 11,921.45, 16,450.38 and 6,887.27 is: 9,503.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.45 : 16,450.38 = 6,887.27 : x
  2. Step 2: Convert to fraction form
    11,921.45/16,450.38 = 6,887.27/x
  3. Step 3: Cross multiply
    11,921.45x = 16,450.38 × 6,887.27
  4. Step 4: Simplify right side
    11,921.45x = 113,298,249.79
  5. Step 5: Solve for x
    x = 113,298,249.79/11,921.45
  6. Step 6: Final answer
    x = 9,503.73

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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.