Home / 20,555.92-28,367.26-11,124.48

Finding the Fourth Proportional to 20,555.92, 28,367.26 and 11,124.48

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Solution

The fourth proportional to 20,555.92, 28,367.26 and 11,124.48 is: 15,351.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.92 : 28,367.26 = 11,124.48 : x
  2. Step 2: Convert to fraction form
    20,555.92/28,367.26 = 11,124.48/x
  3. Step 3: Cross multiply
    20,555.92x = 28,367.26 × 11,124.48
  4. Step 4: Simplify right side
    20,555.92x = 315,571,010.27
  5. Step 5: Solve for x
    x = 315,571,010.27/20,555.92
  6. Step 6: Final answer
    x = 15,351.83

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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.