Home / 11,921.26-16,450.92-6,615.94

Finding the Fourth Proportional to 11,921.26, 16,450.92 and 6,615.94

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Solution

The fourth proportional to 11,921.26, 16,450.92 and 6,615.94 is: 9,129.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.26 : 16,450.92 = 6,615.94 : x
  2. Step 2: Convert to fraction form
    11,921.26/16,450.92 = 6,615.94/x
  3. Step 3: Cross multiply
    11,921.26x = 16,450.92 × 6,615.94
  4. Step 4: Simplify right side
    11,921.26x = 108,838,299.66
  5. Step 5: Solve for x
    x = 108,838,299.66/11,921.26
  6. Step 6: Final answer
    x = 9,129.76

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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.