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Finding the Fourth Proportional to 15,195.21, 20,967 and 8,480.52

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Solution

The fourth proportional to 15,195.21, 20,967 and 8,480.52 is: 11,701.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.21 : 20,967 = 8,480.52 : x
  2. Step 2: Convert to fraction form
    15,195.21/20,967 = 8,480.52/x
  3. Step 3: Cross multiply
    15,195.21x = 20,967 × 8,480.52
  4. Step 4: Simplify right side
    15,195.21x = 177,811,062.84
  5. Step 5: Solve for x
    x = 177,811,062.84/15,195.21
  6. Step 6: Final answer
    x = 11,701.78

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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.