Home / 20,754.12-28,640.54-11,801.62

Finding the Fourth Proportional to 20,754.12, 28,640.54 and 11,801.62

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Solution

The fourth proportional to 20,754.12, 28,640.54 and 11,801.62 is: 16,286.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.12 : 28,640.54 = 11,801.62 : x
  2. Step 2: Convert to fraction form
    20,754.12/28,640.54 = 11,801.62/x
  3. Step 3: Cross multiply
    20,754.12x = 28,640.54 × 11,801.62
  4. Step 4: Simplify right side
    20,754.12x = 338,004,769.67
  5. Step 5: Solve for x
    x = 338,004,769.67/20,754.12
  6. Step 6: Final answer
    x = 16,286.15

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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.