Home / 22,131.49-30,523.48-20,286.52

Finding the Fourth Proportional to 22,131.49, 30,523.48 and 20,286.52

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Solution

The fourth proportional to 22,131.49, 30,523.48 and 20,286.52 is: 27,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,131.49 : 30,523.48 = 20,286.52 : x
  2. Step 2: Convert to fraction form
    22,131.49/30,523.48 = 20,286.52/x
  3. Step 3: Cross multiply
    22,131.49x = 30,523.48 × 20,286.52
  4. Step 4: Simplify right side
    22,131.49x = 619,215,187.49
  5. Step 5: Solve for x
    x = 619,215,187.49/22,131.49
  6. Step 6: Final answer
    x = 27,978.92

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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.