Home / 11,140.40-16,677.78-8,231.70

Finding the Fourth Proportional to 11,140.40, 16,677.78 and 8,231.70

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Solution

The fourth proportional to 11,140.40, 16,677.78 and 8,231.70 is: 12,323.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.40 : 16,677.78 = 8,231.70 : x
  2. Step 2: Convert to fraction form
    11,140.40/16,677.78 = 8,231.70/x
  3. Step 3: Cross multiply
    11,140.40x = 16,677.78 × 8,231.70
  4. Step 4: Simplify right side
    11,140.40x = 137,286,481.63
  5. Step 5: Solve for x
    x = 137,286,481.63/11,140.40
  6. Step 6: Final answer
    x = 12,323.30

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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.