Home / 20,185.14-30,269.61-8,340.74

Finding the Fourth Proportional to 20,185.14, 30,269.61 and 8,340.74

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Solution

The fourth proportional to 20,185.14, 30,269.61 and 8,340.74 is: 12,507.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.14 : 30,269.61 = 8,340.74 : x
  2. Step 2: Convert to fraction form
    20,185.14/30,269.61 = 8,340.74/x
  3. Step 3: Cross multiply
    20,185.14x = 30,269.61 × 8,340.74
  4. Step 4: Simplify right side
    20,185.14x = 252,470,795.56
  5. Step 5: Solve for x
    x = 252,470,795.56/20,185.14
  6. Step 6: Final answer
    x = 12,507.76

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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.