Home / 20,754.24-28,640.71-11,801.74

Finding the Fourth Proportional to 20,754.24, 28,640.71 and 11,801.74

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Solution

The fourth proportional to 20,754.24, 28,640.71 and 11,801.74 is: 16,286.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.24 : 28,640.71 = 11,801.74 : x
  2. Step 2: Convert to fraction form
    20,754.24/28,640.71 = 11,801.74/x
  3. Step 3: Cross multiply
    20,754.24x = 28,640.71 × 11,801.74
  4. Step 4: Simplify right side
    20,754.24x = 338,010,212.84
  5. Step 5: Solve for x
    x = 338,010,212.84/20,754.24
  6. Step 6: Final answer
    x = 16,286.32

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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.