Home / 11,197.68-15,449.60-7,221.04

Finding the Fourth Proportional to 11,197.68, 15,449.60 and 7,221.04

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Solution

The fourth proportional to 11,197.68, 15,449.60 and 7,221.04 is: 9,962.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,197.68 : 15,449.60 = 7,221.04 : x
  2. Step 2: Convert to fraction form
    11,197.68/15,449.60 = 7,221.04/x
  3. Step 3: Cross multiply
    11,197.68x = 15,449.60 × 7,221.04
  4. Step 4: Simplify right side
    11,197.68x = 111,562,179.58
  5. Step 5: Solve for x
    x = 111,562,179.58/11,197.68
  6. Step 6: Final answer
    x = 9,962.97

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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.