Home / 12,110.87-18,170.97-4,720.57

Finding the Fourth Proportional to 12,110.87, 18,170.97 and 4,720.57

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Solution

The fourth proportional to 12,110.87, 18,170.97 and 4,720.57 is: 7,082.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,110.87 : 18,170.97 = 4,720.57 : x
  2. Step 2: Convert to fraction form
    12,110.87/18,170.97 = 4,720.57/x
  3. Step 3: Cross multiply
    12,110.87x = 18,170.97 × 4,720.57
  4. Step 4: Simplify right side
    12,110.87x = 85,777,335.85
  5. Step 5: Solve for x
    x = 85,777,335.85/12,110.87
  6. Step 6: Final answer
    x = 7,082.67

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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.