Home / 20,760.29-28,649.05-11,328.85

Finding the Fourth Proportional to 20,760.29, 28,649.05 and 11,328.85

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Solution

The fourth proportional to 20,760.29, 28,649.05 and 11,328.85 is: 15,633.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.29 : 28,649.05 = 11,328.85 : x
  2. Step 2: Convert to fraction form
    20,760.29/28,649.05 = 11,328.85/x
  3. Step 3: Cross multiply
    20,760.29x = 28,649.05 × 11,328.85
  4. Step 4: Simplify right side
    20,760.29x = 324,560,790.09
  5. Step 5: Solve for x
    x = 324,560,790.09/20,760.29
  6. Step 6: Final answer
    x = 15,633.73

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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.