Home / 21,891.87-30,180.60-16,511.85

Finding the Fourth Proportional to 21,891.87, 30,180.60 and 16,511.85

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Solution

The fourth proportional to 21,891.87, 30,180.60 and 16,511.85 is: 22,763.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891.87 : 30,180.60 = 16,511.85 : x
  2. Step 2: Convert to fraction form
    21,891.87/30,180.60 = 16,511.85/x
  3. Step 3: Cross multiply
    21,891.87x = 30,180.60 × 16,511.85
  4. Step 4: Simplify right side
    21,891.87x = 498,337,540.11
  5. Step 5: Solve for x
    x = 498,337,540.11/21,891.87
  6. Step 6: Final answer
    x = 22,763.59

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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.