Home / 20,736.43-28,616.20-11,304.99

Finding the Fourth Proportional to 20,736.43, 28,616.20 and 11,304.99

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Solution

The fourth proportional to 20,736.43, 28,616.20 and 11,304.99 is: 15,600.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.43 : 28,616.20 = 11,304.99 : x
  2. Step 2: Convert to fraction form
    20,736.43/28,616.20 = 11,304.99/x
  3. Step 3: Cross multiply
    20,736.43x = 28,616.20 × 11,304.99
  4. Step 4: Simplify right side
    20,736.43x = 323,505,826.58
  5. Step 5: Solve for x
    x = 323,505,826.58/20,736.43
  6. Step 6: Final answer
    x = 15,600.85

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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.