Home / 11,139.40-16,676.29-8,230.69

Finding the Fourth Proportional to 11,139.40, 16,676.29 and 8,230.69

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Solution

The fourth proportional to 11,139.40, 16,676.29 and 8,230.69 is: 12,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.40 : 16,676.29 = 8,230.69 : x
  2. Step 2: Convert to fraction form
    11,139.40/16,676.29 = 8,230.69/x
  3. Step 3: Cross multiply
    11,139.40x = 16,676.29 × 8,230.69
  4. Step 4: Simplify right side
    11,139.40x = 137,257,373.34
  5. Step 5: Solve for x
    x = 137,257,373.34/11,139.40
  6. Step 6: Final answer
    x = 12,321.79

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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.