Home / 20,161.44-27,822.78-11,208.96

Finding the Fourth Proportional to 20,161.44, 27,822.78 and 11,208.96

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Solution

The fourth proportional to 20,161.44, 27,822.78 and 11,208.96 is: 15,468.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.44 : 27,822.78 = 11,208.96 : x
  2. Step 2: Convert to fraction form
    20,161.44/27,822.78 = 11,208.96/x
  3. Step 3: Cross multiply
    20,161.44x = 27,822.78 × 11,208.96
  4. Step 4: Simplify right side
    20,161.44x = 311,864,428.11
  5. Step 5: Solve for x
    x = 311,864,428.11/20,161.44
  6. Step 6: Final answer
    x = 15,468.36

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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.