Home / 20,901.33-28,843.89-11,469.96

Finding the Fourth Proportional to 20,901.33, 28,843.89 and 11,469.96

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Solution

The fourth proportional to 20,901.33, 28,843.89 and 11,469.96 is: 15,828.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.33 : 28,843.89 = 11,469.96 : x
  2. Step 2: Convert to fraction form
    20,901.33/28,843.89 = 11,469.96/x
  3. Step 3: Cross multiply
    20,901.33x = 28,843.89 × 11,469.96
  4. Step 4: Simplify right side
    20,901.33x = 330,838,264.54
  5. Step 5: Solve for x
    x = 330,838,264.54/20,901.33
  6. Step 6: Final answer
    x = 15,828.57

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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.