Home / 20,744.26-28,626.33-12,129.82

Finding the Fourth Proportional to 20,744.26, 28,626.33 and 12,129.82

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Solution

The fourth proportional to 20,744.26, 28,626.33 and 12,129.82 is: 16,738.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.26 : 28,626.33 = 12,129.82 : x
  2. Step 2: Convert to fraction form
    20,744.26/28,626.33 = 12,129.82/x
  3. Step 3: Cross multiply
    20,744.26x = 28,626.33 × 12,129.82
  4. Step 4: Simplify right side
    20,744.26x = 347,232,230.16
  5. Step 5: Solve for x
    x = 347,232,230.16/20,744.26
  6. Step 6: Final answer
    x = 16,738.71

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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.