Home / 11,221.05-15,479.35-8,563.85

Finding the Fourth Proportional to 11,221.05, 15,479.35 and 8,563.85

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Solution

The fourth proportional to 11,221.05, 15,479.35 and 8,563.85 is: 11,813.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.05 : 15,479.35 = 8,563.85 : x
  2. Step 2: Convert to fraction form
    11,221.05/15,479.35 = 8,563.85/x
  3. Step 3: Cross multiply
    11,221.05x = 15,479.35 × 8,563.85
  4. Step 4: Simplify right side
    11,221.05x = 132,562,754.10
  5. Step 5: Solve for x
    x = 132,562,754.10/11,221.05
  6. Step 6: Final answer
    x = 11,813.76

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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.