Home / 20,161.56-27,821.64-11,208.73

Finding the Fourth Proportional to 20,161.56, 27,821.64 and 11,208.73

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Solution

The fourth proportional to 20,161.56, 27,821.64 and 11,208.73 is: 15,467.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.56 : 27,821.64 = 11,208.73 : x
  2. Step 2: Convert to fraction form
    20,161.56/27,821.64 = 11,208.73/x
  3. Step 3: Cross multiply
    20,161.56x = 27,821.64 × 11,208.73
  4. Step 4: Simplify right side
    20,161.56x = 311,845,250.92
  5. Step 5: Solve for x
    x = 311,845,250.92/20,161.56
  6. Step 6: Final answer
    x = 15,467.32

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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.