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Finding the Fourth Proportional to 15,069.39, 20,797.62 and 8,782.17

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Solution

The fourth proportional to 15,069.39, 20,797.62 and 8,782.17 is: 12,120.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,069.39 : 20,797.62 = 8,782.17 : x
  2. Step 2: Convert to fraction form
    15,069.39/20,797.62 = 8,782.17/x
  3. Step 3: Cross multiply
    15,069.39x = 20,797.62 × 8,782.17
  4. Step 4: Simplify right side
    15,069.39x = 182,648,234.44
  5. Step 5: Solve for x
    x = 182,648,234.44/15,069.39
  6. Step 6: Final answer
    x = 12,120.48

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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.