Home / 20,620.87-30,917.42-9,521.44

Finding the Fourth Proportional to 20,620.87, 30,917.42 and 9,521.44

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Solution

The fourth proportional to 20,620.87, 30,917.42 and 9,521.44 is: 14,275.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.87 : 30,917.42 = 9,521.44 : x
  2. Step 2: Convert to fraction form
    20,620.87/30,917.42 = 9,521.44/x
  3. Step 3: Cross multiply
    20,620.87x = 30,917.42 × 9,521.44
  4. Step 4: Simplify right side
    20,620.87x = 294,378,234.58
  5. Step 5: Solve for x
    x = 294,378,234.58/20,620.87
  6. Step 6: Final answer
    x = 14,275.74

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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.