Home / 11,150.40-16,729.20-7,456.80

Finding the Fourth Proportional to 11,150.40, 16,729.20 and 7,456.80

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Solution

The fourth proportional to 11,150.40, 16,729.20 and 7,456.80 is: 11,187.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.40 : 16,729.20 = 7,456.80 : x
  2. Step 2: Convert to fraction form
    11,150.40/16,729.20 = 7,456.80/x
  3. Step 3: Cross multiply
    11,150.40x = 16,729.20 × 7,456.80
  4. Step 4: Simplify right side
    11,150.40x = 124,746,298.56
  5. Step 5: Solve for x
    x = 124,746,298.56/11,150.40
  6. Step 6: Final answer
    x = 11,187.61

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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.