Home / 20,760.33-28,649.20-11,684.95

Finding the Fourth Proportional to 20,760.33, 28,649.20 and 11,684.95

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Solution

The fourth proportional to 20,760.33, 28,649.20 and 11,684.95 is: 16,125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.33 : 28,649.20 = 11,684.95 : x
  2. Step 2: Convert to fraction form
    20,760.33/28,649.20 = 11,684.95/x
  3. Step 3: Cross multiply
    20,760.33x = 28,649.20 × 11,684.95
  4. Step 4: Simplify right side
    20,760.33x = 334,764,469.54
  5. Step 5: Solve for x
    x = 334,764,469.54/20,760.33
  6. Step 6: Final answer
    x = 16,125.20

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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.