Home / 11,942.82-16,478.74-8,161.74

Finding the Fourth Proportional to 11,942.82, 16,478.74 and 8,161.74

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Solution

The fourth proportional to 11,942.82, 16,478.74 and 8,161.74 is: 11,261.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,942.82 : 16,478.74 = 8,161.74 : x
  2. Step 2: Convert to fraction form
    11,942.82/16,478.74 = 8,161.74/x
  3. Step 3: Cross multiply
    11,942.82x = 16,478.74 × 8,161.74
  4. Step 4: Simplify right side
    11,942.82x = 134,495,191.41
  5. Step 5: Solve for x
    x = 134,495,191.41/11,942.82
  6. Step 6: Final answer
    x = 11,261.59

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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.