Home / 20,901.38-28,843.90-11,469.94

Finding the Fourth Proportional to 20,901.38, 28,843.90 and 11,469.94

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Solution

The fourth proportional to 20,901.38, 28,843.90 and 11,469.94 is: 15,828.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.38 : 28,843.90 = 11,469.94 : x
  2. Step 2: Convert to fraction form
    20,901.38/28,843.90 = 11,469.94/x
  3. Step 3: Cross multiply
    20,901.38x = 28,843.90 × 11,469.94
  4. Step 4: Simplify right side
    20,901.38x = 330,837,701.58
  5. Step 5: Solve for x
    x = 330,837,701.58/20,901.38
  6. Step 6: Final answer
    x = 15,828.51

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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.