Home / 20,676.87-28,540.53-11,730.33

Finding the Fourth Proportional to 20,676.87, 28,540.53 and 11,730.33

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Solution

The fourth proportional to 20,676.87, 28,540.53 and 11,730.33 is: 16,191.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.87 : 28,540.53 = 11,730.33 : x
  2. Step 2: Convert to fraction form
    20,676.87/28,540.53 = 11,730.33/x
  3. Step 3: Cross multiply
    20,676.87x = 28,540.53 × 11,730.33
  4. Step 4: Simplify right side
    20,676.87x = 334,789,835.27
  5. Step 5: Solve for x
    x = 334,789,835.27/20,676.87
  6. Step 6: Final answer
    x = 16,191.51

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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.