Home / 11,191.25-15,446.12-6,414.39

Finding the Fourth Proportional to 11,191.25, 15,446.12 and 6,414.39

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Solution

The fourth proportional to 11,191.25, 15,446.12 and 6,414.39 is: 8,853.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.25 : 15,446.12 = 6,414.39 : x
  2. Step 2: Convert to fraction form
    11,191.25/15,446.12 = 6,414.39/x
  3. Step 3: Cross multiply
    11,191.25x = 15,446.12 × 6,414.39
  4. Step 4: Simplify right side
    11,191.25x = 99,077,498.67
  5. Step 5: Solve for x
    x = 99,077,498.67/11,191.25
  6. Step 6: Final answer
    x = 8,853.12

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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.