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Finding the Fourth Proportional to 15,065.44, 20,790.18 and 8,351.44

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Solution

The fourth proportional to 15,065.44, 20,790.18 and 8,351.44 is: 11,524.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,065.44 : 20,790.18 = 8,351.44 : x
  2. Step 2: Convert to fraction form
    15,065.44/20,790.18 = 8,351.44/x
  3. Step 3: Cross multiply
    15,065.44x = 20,790.18 × 8,351.44
  4. Step 4: Simplify right side
    15,065.44x = 173,627,940.86
  5. Step 5: Solve for x
    x = 173,627,940.86/15,065.44
  6. Step 6: Final answer
    x = 11,524.92

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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.