Home / 18,019.32-27,028.53-8,151.39

Finding the Fourth Proportional to 18,019.32, 27,028.53 and 8,151.39

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Solution

The fourth proportional to 18,019.32, 27,028.53 and 8,151.39 is: 12,226.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,019.32 : 27,028.53 = 8,151.39 : x
  2. Step 2: Convert to fraction form
    18,019.32/27,028.53 = 8,151.39/x
  3. Step 3: Cross multiply
    18,019.32x = 27,028.53 × 8,151.39
  4. Step 4: Simplify right side
    18,019.32x = 220,320,089.16
  5. Step 5: Solve for x
    x = 220,320,089.16/18,019.32
  6. Step 6: Final answer
    x = 12,226.88

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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.