Home / 12,408.17-18,614.93-4,087.78

Finding the Fourth Proportional to 12,408.17, 18,614.93 and 4,087.78

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Solution

The fourth proportional to 12,408.17, 18,614.93 and 4,087.78 is: 6,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.17 : 18,614.93 = 4,087.78 : x
  2. Step 2: Convert to fraction form
    12,408.17/18,614.93 = 4,087.78/x
  3. Step 3: Cross multiply
    12,408.17x = 18,614.93 × 4,087.78
  4. Step 4: Simplify right side
    12,408.17x = 76,093,738.56
  5. Step 5: Solve for x
    x = 76,093,738.56/12,408.17
  6. Step 6: Final answer
    x = 6,132.55

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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.