Home / 20,198.10-30,302.55-18,021.90

Finding the Fourth Proportional to 20,198.10, 30,302.55 and 18,021.90

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Solution

The fourth proportional to 20,198.10, 30,302.55 and 18,021.90 is: 27,037.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.10 : 30,302.55 = 18,021.90 : x
  2. Step 2: Convert to fraction form
    20,198.10/30,302.55 = 18,021.90/x
  3. Step 3: Cross multiply
    20,198.10x = 30,302.55 × 18,021.90
  4. Step 4: Simplify right side
    20,198.10x = 546,109,525.85
  5. Step 5: Solve for x
    x = 546,109,525.85/20,198.10
  6. Step 6: Final answer
    x = 27,037.67

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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.