Home / 12,408.21-18,614.93-3,642.39

Finding the Fourth Proportional to 12,408.21, 18,614.93 and 3,642.39

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Solution

The fourth proportional to 12,408.21, 18,614.93 and 3,642.39 is: 5,464.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.21 : 18,614.93 = 3,642.39 : x
  2. Step 2: Convert to fraction form
    12,408.21/18,614.93 = 3,642.39/x
  3. Step 3: Cross multiply
    12,408.21x = 18,614.93 × 3,642.39
  4. Step 4: Simplify right side
    12,408.21x = 67,802,816.67
  5. Step 5: Solve for x
    x = 67,802,816.67/12,408.21
  6. Step 6: Final answer
    x = 5,464.35

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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.