Home / 12,330.38-18,495.57-4,122.38

Finding the Fourth Proportional to 12,330.38, 18,495.57 and 4,122.38

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Solution

The fourth proportional to 12,330.38, 18,495.57 and 4,122.38 is: 6,183.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.38 : 18,495.57 = 4,122.38 : x
  2. Step 2: Convert to fraction form
    12,330.38/18,495.57 = 4,122.38/x
  3. Step 3: Cross multiply
    12,330.38x = 18,495.57 × 4,122.38
  4. Step 4: Simplify right side
    12,330.38x = 76,245,675.38
  5. Step 5: Solve for x
    x = 76,245,675.38/12,330.38
  6. Step 6: Final answer
    x = 6,183.57

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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.