Home / 20,901.09-28,843.43-11,469.81

Finding the Fourth Proportional to 20,901.09, 28,843.43 and 11,469.81

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Solution

The fourth proportional to 20,901.09, 28,843.43 and 11,469.81 is: 15,828.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.09 : 28,843.43 = 11,469.81 : x
  2. Step 2: Convert to fraction form
    20,901.09/28,843.43 = 11,469.81/x
  3. Step 3: Cross multiply
    20,901.09x = 28,843.43 × 11,469.81
  4. Step 4: Simplify right side
    20,901.09x = 330,828,604.50
  5. Step 5: Solve for x
    x = 330,828,604.50/20,901.09
  6. Step 6: Final answer
    x = 15,828.29

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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.