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Finding the Fourth Proportional to 11,197.52, 15,449.78 and 7,213.84

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Solution

The fourth proportional to 11,197.52, 15,449.78 and 7,213.84 is: 9,953.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,197.52 : 15,449.78 = 7,213.84 : x
  2. Step 2: Convert to fraction form
    11,197.52/15,449.78 = 7,213.84/x
  3. Step 3: Cross multiply
    11,197.52x = 15,449.78 × 7,213.84
  4. Step 4: Simplify right side
    11,197.52x = 111,452,240.96
  5. Step 5: Solve for x
    x = 111,452,240.96/11,197.52
  6. Step 6: Final answer
    x = 9,953.30

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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.