Home / 20,325.44-28,049.61-11,372.87

Finding the Fourth Proportional to 20,325.44, 28,049.61 and 11,372.87

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Solution

The fourth proportional to 20,325.44, 28,049.61 and 11,372.87 is: 15,694.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.44 : 28,049.61 = 11,372.87 : x
  2. Step 2: Convert to fraction form
    20,325.44/28,049.61 = 11,372.87/x
  3. Step 3: Cross multiply
    20,325.44x = 28,049.61 × 11,372.87
  4. Step 4: Simplify right side
    20,325.44x = 319,004,568.08
  5. Step 5: Solve for x
    x = 319,004,568.08/20,325.44
  6. Step 6: Final answer
    x = 15,694.84

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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.