Home / 20,639.38-30,954.94-10,104.86

Finding the Fourth Proportional to 20,639.38, 30,954.94 and 10,104.86

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Solution

The fourth proportional to 20,639.38, 30,954.94 and 10,104.86 is: 15,155.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.38 : 30,954.94 = 10,104.86 : x
  2. Step 2: Convert to fraction form
    20,639.38/30,954.94 = 10,104.86/x
  3. Step 3: Cross multiply
    20,639.38x = 30,954.94 × 10,104.86
  4. Step 4: Simplify right side
    20,639.38x = 312,795,335.01
  5. Step 5: Solve for x
    x = 312,795,335.01/20,639.38
  6. Step 6: Final answer
    x = 15,155.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.