Home / 12,271.33-18,408.21-4,480.75

Finding the Fourth Proportional to 12,271.33, 18,408.21 and 4,480.75

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Solution

The fourth proportional to 12,271.33, 18,408.21 and 4,480.75 is: 6,721.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,271.33 : 18,408.21 = 4,480.75 : x
  2. Step 2: Convert to fraction form
    12,271.33/18,408.21 = 4,480.75/x
  3. Step 3: Cross multiply
    12,271.33x = 18,408.21 × 4,480.75
  4. Step 4: Simplify right side
    12,271.33x = 82,482,586.96
  5. Step 5: Solve for x
    x = 82,482,586.96/12,271.33
  6. Step 6: Final answer
    x = 6,721.57

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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.