Home / 20,148.78-27,805.17-11,196.12

Finding the Fourth Proportional to 20,148.78, 27,805.17 and 11,196.12

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Solution

The fourth proportional to 20,148.78, 27,805.17 and 11,196.12 is: 15,450.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.78 : 27,805.17 = 11,196.12 : x
  2. Step 2: Convert to fraction form
    20,148.78/27,805.17 = 11,196.12/x
  3. Step 3: Cross multiply
    20,148.78x = 27,805.17 × 11,196.12
  4. Step 4: Simplify right side
    20,148.78x = 311,310,019.94
  5. Step 5: Solve for x
    x = 311,310,019.94/20,148.78
  6. Step 6: Final answer
    x = 15,450.56

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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.