Home / 20,409.57-28,166.33-11,908.62

Finding the Fourth Proportional to 20,409.57, 28,166.33 and 11,908.62

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Solution

The fourth proportional to 20,409.57, 28,166.33 and 11,908.62 is: 16,434.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.57 : 28,166.33 = 11,908.62 : x
  2. Step 2: Convert to fraction form
    20,409.57/28,166.33 = 11,908.62/x
  3. Step 3: Cross multiply
    20,409.57x = 28,166.33 × 11,908.62
  4. Step 4: Simplify right side
    20,409.57x = 335,422,150.54
  5. Step 5: Solve for x
    x = 335,422,150.54/20,409.57
  6. Step 6: Final answer
    x = 16,434.55

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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.