Home / 11,131.40-16,672.80-7,826.60

Finding the Fourth Proportional to 11,131.40, 16,672.80 and 7,826.60

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Solution

The fourth proportional to 11,131.40, 16,672.80 and 7,826.60 is: 11,722.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.40 : 16,672.80 = 7,826.60 : x
  2. Step 2: Convert to fraction form
    11,131.40/16,672.80 = 7,826.60/x
  3. Step 3: Cross multiply
    11,131.40x = 16,672.80 × 7,826.60
  4. Step 4: Simplify right side
    11,131.40x = 130,491,336.48
  5. Step 5: Solve for x
    x = 130,491,336.48/11,131.40
  6. Step 6: Final answer
    x = 11,722.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.