Home / 20,629.57-28,469.46-11,676.91

Finding the Fourth Proportional to 20,629.57, 28,469.46 and 11,676.91

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Solution

The fourth proportional to 20,629.57, 28,469.46 and 11,676.91 is: 16,114.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.57 : 28,469.46 = 11,676.91 : x
  2. Step 2: Convert to fraction form
    20,629.57/28,469.46 = 11,676.91/x
  3. Step 3: Cross multiply
    20,629.57x = 28,469.46 × 11,676.91
  4. Step 4: Simplify right side
    20,629.57x = 332,435,322.17
  5. Step 5: Solve for x
    x = 332,435,322.17/20,629.57
  6. Step 6: Final answer
    x = 16,114.51

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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.