Home / 22,177.21-30,600.75-13,221.45

Finding the Fourth Proportional to 22,177.21, 30,600.75 and 13,221.45

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Solution

The fourth proportional to 22,177.21, 30,600.75 and 13,221.45 is: 18,243.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,177.21 : 30,600.75 = 13,221.45 : x
  2. Step 2: Convert to fraction form
    22,177.21/30,600.75 = 13,221.45/x
  3. Step 3: Cross multiply
    22,177.21x = 30,600.75 × 13,221.45
  4. Step 4: Simplify right side
    22,177.21x = 404,586,286.09
  5. Step 5: Solve for x
    x = 404,586,286.09/22,177.21
  6. Step 6: Final answer
    x = 18,243.34

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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.