Home / 18,721.88-28,193.62-16,286.14

Finding the Fourth Proportional to 18,721.88, 28,193.62 and 16,286.14

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Solution

The fourth proportional to 18,721.88, 28,193.62 and 16,286.14 is: 24,525.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.88 : 28,193.62 = 16,286.14 : x
  2. Step 2: Convert to fraction form
    18,721.88/28,193.62 = 16,286.14/x
  3. Step 3: Cross multiply
    18,721.88x = 28,193.62 × 16,286.14
  4. Step 4: Simplify right side
    18,721.88x = 459,165,242.43
  5. Step 5: Solve for x
    x = 459,165,242.43/18,721.88
  6. Step 6: Final answer
    x = 24,525.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.