Home / 18,748.88-28,131.14-8,226.47

Finding the Fourth Proportional to 18,748.88, 28,131.14 and 8,226.47

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Solution

The fourth proportional to 18,748.88, 28,131.14 and 8,226.47 is: 12,343.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,748.88 : 28,131.14 = 8,226.47 : x
  2. Step 2: Convert to fraction form
    18,748.88/28,131.14 = 8,226.47/x
  3. Step 3: Cross multiply
    18,748.88x = 28,131.14 × 8,226.47
  4. Step 4: Simplify right side
    18,748.88x = 231,419,838.62
  5. Step 5: Solve for x
    x = 231,419,838.62/18,748.88
  6. Step 6: Final answer
    x = 12,343.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.