Home / 20,581.69-28,403.84-11,629.57

Finding the Fourth Proportional to 20,581.69, 28,403.84 and 11,629.57

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Solution

The fourth proportional to 20,581.69, 28,403.84 and 11,629.57 is: 16,049.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.69 : 28,403.84 = 11,629.57 : x
  2. Step 2: Convert to fraction form
    20,581.69/28,403.84 = 11,629.57/x
  3. Step 3: Cross multiply
    20,581.69x = 28,403.84 × 11,629.57
  4. Step 4: Simplify right side
    20,581.69x = 330,324,445.55
  5. Step 5: Solve for x
    x = 330,324,445.55/20,581.69
  6. Step 6: Final answer
    x = 16,049.43

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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.