Home / 20,629.25-28,469.77-11,676.72

Finding the Fourth Proportional to 20,629.25, 28,469.77 and 11,676.72

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Solution

The fourth proportional to 20,629.25, 28,469.77 and 11,676.72 is: 16,114.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.25 : 28,469.77 = 11,676.72 : x
  2. Step 2: Convert to fraction form
    20,629.25/28,469.77 = 11,676.72/x
  3. Step 3: Cross multiply
    20,629.25x = 28,469.77 × 11,676.72
  4. Step 4: Simplify right side
    20,629.25x = 332,433,532.75
  5. Step 5: Solve for x
    x = 332,433,532.75/20,629.25
  6. Step 6: Final answer
    x = 16,114.67

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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.