Home / 20,701.21-28,568.19-11,269.75

Finding the Fourth Proportional to 20,701.21, 28,568.19 and 11,269.75

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Solution

The fourth proportional to 20,701.21, 28,568.19 and 11,269.75 is: 15,552.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.21 : 28,568.19 = 11,269.75 : x
  2. Step 2: Convert to fraction form
    20,701.21/28,568.19 = 11,269.75/x
  3. Step 3: Cross multiply
    20,701.21x = 28,568.19 × 11,269.75
  4. Step 4: Simplify right side
    20,701.21x = 321,956,359.25
  5. Step 5: Solve for x
    x = 321,956,359.25/20,701.21
  6. Step 6: Final answer
    x = 15,552.54

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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.