Home / 20,112.54-30,161.61-6,961.38

Finding the Fourth Proportional to 20,112.54, 30,161.61 and 6,961.38

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Solution

The fourth proportional to 20,112.54, 30,161.61 and 6,961.38 is: 10,439.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.54 : 30,161.61 = 6,961.38 : x
  2. Step 2: Convert to fraction form
    20,112.54/30,161.61 = 6,961.38/x
  3. Step 3: Cross multiply
    20,112.54x = 30,161.61 × 6,961.38
  4. Step 4: Simplify right side
    20,112.54x = 209,966,428.62
  5. Step 5: Solve for x
    x = 209,966,428.62/20,112.54
  6. Step 6: Final answer
    x = 10,439.58

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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.