Home / 20,824.85-28,738.20-11,264.73

Finding the Fourth Proportional to 20,824.85, 28,738.20 and 11,264.73

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Solution

The fourth proportional to 20,824.85, 28,738.20 and 11,264.73 is: 15,545.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.85 : 28,738.20 = 11,264.73 : x
  2. Step 2: Convert to fraction form
    20,824.85/28,738.20 = 11,264.73/x
  3. Step 3: Cross multiply
    20,824.85x = 28,738.20 × 11,264.73
  4. Step 4: Simplify right side
    20,824.85x = 323,728,063.69
  5. Step 5: Solve for x
    x = 323,728,063.69/20,824.85
  6. Step 6: Final answer
    x = 15,545.28

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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.