Home / 20,143.46-30,212.89-5,353.52

Finding the Fourth Proportional to 20,143.46, 30,212.89 and 5,353.52

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Solution

The fourth proportional to 20,143.46, 30,212.89 and 5,353.52 is: 8,029.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.46 : 30,212.89 = 5,353.52 : x
  2. Step 2: Convert to fraction form
    20,143.46/30,212.89 = 5,353.52/x
  3. Step 3: Cross multiply
    20,143.46x = 30,212.89 × 5,353.52
  4. Step 4: Simplify right side
    20,143.46x = 161,745,310.87
  5. Step 5: Solve for x
    x = 161,745,310.87/20,143.46
  6. Step 6: Final answer
    x = 8,029.67

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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.