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Finding the Fourth Proportional to 11,322.54, 16,965.78 and 7,611.12

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Solution

The fourth proportional to 11,322.54, 16,965.78 and 7,611.12 is: 11,404.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,322.54 : 16,965.78 = 7,611.12 : x
  2. Step 2: Convert to fraction form
    11,322.54/16,965.78 = 7,611.12/x
  3. Step 3: Cross multiply
    11,322.54x = 16,965.78 × 7,611.12
  4. Step 4: Simplify right side
    11,322.54x = 129,128,587.47
  5. Step 5: Solve for x
    x = 129,128,587.47/11,322.54
  6. Step 6: Final answer
    x = 11,404.56

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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.