Home / 20,406.18-28,160.82-12,022.68

Finding the Fourth Proportional to 20,406.18, 28,160.82 and 12,022.68

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Solution

The fourth proportional to 20,406.18, 28,160.82 and 12,022.68 is: 16,591.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.18 : 28,160.82 = 12,022.68 : x
  2. Step 2: Convert to fraction form
    20,406.18/28,160.82 = 12,022.68/x
  3. Step 3: Cross multiply
    20,406.18x = 28,160.82 × 12,022.68
  4. Step 4: Simplify right side
    20,406.18x = 338,568,527.40
  5. Step 5: Solve for x
    x = 338,568,527.40/20,406.18
  6. Step 6: Final answer
    x = 16,591.47

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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.