Home / 20,620.97-28,456.93-11,668.29

Finding the Fourth Proportional to 20,620.97, 28,456.93 and 11,668.29

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Solution

The fourth proportional to 20,620.97, 28,456.93 and 11,668.29 is: 16,102.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.97 : 28,456.93 = 11,668.29 : x
  2. Step 2: Convert to fraction form
    20,620.97/28,456.93 = 11,668.29/x
  3. Step 3: Cross multiply
    20,620.97x = 28,456.93 × 11,668.29
  4. Step 4: Simplify right side
    20,620.97x = 332,043,569.47
  5. Step 5: Solve for x
    x = 332,043,569.47/20,620.97
  6. Step 6: Final answer
    x = 16,102.23

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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.