Home / 20,180.70-30,260.04-8,491.56

Finding the Fourth Proportional to 20,180.70, 30,260.04 and 8,491.56

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Solution

The fourth proportional to 20,180.70, 30,260.04 and 8,491.56 is: 12,732.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.70 : 30,260.04 = 8,491.56 : x
  2. Step 2: Convert to fraction form
    20,180.70/30,260.04 = 8,491.56/x
  3. Step 3: Cross multiply
    20,180.70x = 30,260.04 × 8,491.56
  4. Step 4: Simplify right side
    20,180.70x = 256,954,945.26
  5. Step 5: Solve for x
    x = 256,954,945.26/20,180.70
  6. Step 6: Final answer
    x = 12,732.71

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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.