Home / 20,150.13-27,807.85-11,198.01

Finding the Fourth Proportional to 20,150.13, 27,807.85 and 11,198.01

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Solution

The fourth proportional to 20,150.13, 27,807.85 and 11,198.01 is: 15,453.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,150.13 : 27,807.85 = 11,198.01 : x
  2. Step 2: Convert to fraction form
    20,150.13/27,807.85 = 11,198.01/x
  3. Step 3: Cross multiply
    20,150.13x = 27,807.85 × 11,198.01
  4. Step 4: Simplify right side
    20,150.13x = 311,392,523.24
  5. Step 5: Solve for x
    x = 311,392,523.24/20,150.13
  6. Step 6: Final answer
    x = 15,453.62

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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.