Home / 11,921.26-16,451.22-6,615.94

Finding the Fourth Proportional to 11,921.26, 16,451.22 and 6,615.94

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Solution

The fourth proportional to 11,921.26, 16,451.22 and 6,615.94 is: 9,129.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.26 : 16,451.22 = 6,615.94 : x
  2. Step 2: Convert to fraction form
    11,921.26/16,451.22 = 6,615.94/x
  3. Step 3: Cross multiply
    11,921.26x = 16,451.22 × 6,615.94
  4. Step 4: Simplify right side
    11,921.26x = 108,840,284.45
  5. Step 5: Solve for x
    x = 108,840,284.45/11,921.26
  6. Step 6: Final answer
    x = 9,129.93

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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.