Home / 11,198.08-15,451.72-6,720.88

Finding the Fourth Proportional to 11,198.08, 15,451.72 and 6,720.88

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Solution

The fourth proportional to 11,198.08, 15,451.72 and 6,720.88 is: 9,273.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,198.08 : 15,451.72 = 6,720.88 : x
  2. Step 2: Convert to fraction form
    11,198.08/15,451.72 = 6,720.88/x
  3. Step 3: Cross multiply
    11,198.08x = 15,451.72 × 6,720.88
  4. Step 4: Simplify right side
    11,198.08x = 103,849,155.91
  5. Step 5: Solve for x
    x = 103,849,155.91/11,198.08
  6. Step 6: Final answer
    x = 9,273.84

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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.