Home / 20,552.11-28,361.94-11,120.67

Finding the Fourth Proportional to 20,552.11, 28,361.94 and 11,120.67

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Solution

The fourth proportional to 20,552.11, 28,361.94 and 11,120.67 is: 15,346.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.11 : 28,361.94 = 11,120.67 : x
  2. Step 2: Convert to fraction form
    20,552.11/28,361.94 = 11,120.67/x
  3. Step 3: Cross multiply
    20,552.11x = 28,361.94 × 11,120.67
  4. Step 4: Simplify right side
    20,552.11x = 315,403,775.30
  5. Step 5: Solve for x
    x = 315,403,775.30/20,552.11
  6. Step 6: Final answer
    x = 15,346.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.