Home / 20,099.45-27,737.25-11,147.06

Finding the Fourth Proportional to 20,099.45, 27,737.25 and 11,147.06

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Solution

The fourth proportional to 20,099.45, 27,737.25 and 11,147.06 is: 15,382.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.45 : 27,737.25 = 11,147.06 : x
  2. Step 2: Convert to fraction form
    20,099.45/27,737.25 = 11,147.06/x
  3. Step 3: Cross multiply
    20,099.45x = 27,737.25 × 11,147.06
  4. Step 4: Simplify right side
    20,099.45x = 309,188,789.99
  5. Step 5: Solve for x
    x = 309,188,789.99/20,099.45
  6. Step 6: Final answer
    x = 15,382.95

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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.