Home / 20,545.14-30,817.71-8,241.78

Finding the Fourth Proportional to 20,545.14, 30,817.71 and 8,241.78

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Solution

The fourth proportional to 20,545.14, 30,817.71 and 8,241.78 is: 12,362.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.14 : 30,817.71 = 8,241.78 : x
  2. Step 2: Convert to fraction form
    20,545.14/30,817.71 = 8,241.78/x
  3. Step 3: Cross multiply
    20,545.14x = 30,817.71 × 8,241.78
  4. Step 4: Simplify right side
    20,545.14x = 253,992,785.92
  5. Step 5: Solve for x
    x = 253,992,785.92/20,545.14
  6. Step 6: Final answer
    x = 12,362.67

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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.