Home / 20,151.08-27,807.94-11,198.35

Finding the Fourth Proportional to 20,151.08, 27,807.94 and 11,198.35

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Solution

The fourth proportional to 20,151.08, 27,807.94 and 11,198.35 is: 15,453.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.08 : 27,807.94 = 11,198.35 : x
  2. Step 2: Convert to fraction form
    20,151.08/27,807.94 = 11,198.35/x
  3. Step 3: Cross multiply
    20,151.08x = 27,807.94 × 11,198.35
  4. Step 4: Simplify right side
    20,151.08x = 311,403,044.90
  5. Step 5: Solve for x
    x = 311,403,044.90/20,151.08
  6. Step 6: Final answer
    x = 15,453.42

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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.