Home / 20,736.70-28,612.92-11,659.45

Finding the Fourth Proportional to 20,736.70, 28,612.92 and 11,659.45

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Solution

The fourth proportional to 20,736.70, 28,612.92 and 11,659.45 is: 16,087.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.70 : 28,612.92 = 11,659.45 : x
  2. Step 2: Convert to fraction form
    20,736.70/28,612.92 = 11,659.45/x
  3. Step 3: Cross multiply
    20,736.70x = 28,612.92 × 11,659.45
  4. Step 4: Simplify right side
    20,736.70x = 333,610,910.09
  5. Step 5: Solve for x
    x = 333,610,910.09/20,736.70
  6. Step 6: Final answer
    x = 16,087.95

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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.