Home / 18,278.75-27,418.22-4,427.75

Finding the Fourth Proportional to 18,278.75, 27,418.22 and 4,427.75

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Solution

The fourth proportional to 18,278.75, 27,418.22 and 4,427.75 is: 6,641.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.75 : 27,418.22 = 4,427.75 : x
  2. Step 2: Convert to fraction form
    18,278.75/27,418.22 = 4,427.75/x
  3. Step 3: Cross multiply
    18,278.75x = 27,418.22 × 4,427.75
  4. Step 4: Simplify right side
    18,278.75x = 121,401,023.61
  5. Step 5: Solve for x
    x = 121,401,023.61/18,278.75
  6. Step 6: Final answer
    x = 6,641.65

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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.