Home / 20,143.87-27,797.73-11,190.94

Finding the Fourth Proportional to 20,143.87, 27,797.73 and 11,190.94

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Solution

The fourth proportional to 20,143.87, 27,797.73 and 11,190.94 is: 15,443.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.87 : 27,797.73 = 11,190.94 : x
  2. Step 2: Convert to fraction form
    20,143.87/27,797.73 = 11,190.94/x
  3. Step 3: Cross multiply
    20,143.87x = 27,797.73 × 11,190.94
  4. Step 4: Simplify right side
    20,143.87x = 311,082,728.57
  5. Step 5: Solve for x
    x = 311,082,728.57/20,143.87
  6. Step 6: Final answer
    x = 15,443.05

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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.