Home / 12,408.21-18,615.06-4,087.89

Finding the Fourth Proportional to 12,408.21, 18,615.06 and 4,087.89

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Solution

The fourth proportional to 12,408.21, 18,615.06 and 4,087.89 is: 6,132.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.21 : 18,615.06 = 4,087.89 : x
  2. Step 2: Convert to fraction form
    12,408.21/18,615.06 = 4,087.89/x
  3. Step 3: Cross multiply
    12,408.21x = 18,615.06 × 4,087.89
  4. Step 4: Simplify right side
    12,408.21x = 76,096,317.62
  5. Step 5: Solve for x
    x = 76,096,317.62/12,408.21
  6. Step 6: Final answer
    x = 6,132.74

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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.