Home / 20,150.57-27,807.80-11,198.91

Finding the Fourth Proportional to 20,150.57, 27,807.80 and 11,198.91

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Solution

The fourth proportional to 20,150.57, 27,807.80 and 11,198.91 is: 15,454.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,150.57 : 27,807.80 = 11,198.91 : x
  2. Step 2: Convert to fraction form
    20,150.57/27,807.80 = 11,198.91/x
  3. Step 3: Cross multiply
    20,150.57x = 27,807.80 × 11,198.91
  4. Step 4: Simplify right side
    20,150.57x = 311,417,049.50
  5. Step 5: Solve for x
    x = 311,417,049.50/20,150.57
  6. Step 6: Final answer
    x = 15,454.50

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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.