Home / 27,930.43-41,872.11-12,123.55

Finding the Fourth Proportional to 27,930.43, 41,872.11 and 12,123.55

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Solution

The fourth proportional to 27,930.43, 41,872.11 and 12,123.55 is: 18,175.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,930.43 : 41,872.11 = 12,123.55 : x
  2. Step 2: Convert to fraction form
    27,930.43/41,872.11 = 12,123.55/x
  3. Step 3: Cross multiply
    27,930.43x = 41,872.11 × 12,123.55
  4. Step 4: Simplify right side
    27,930.43x = 507,638,626.07
  5. Step 5: Solve for x
    x = 507,638,626.07/27,930.43
  6. Step 6: Final answer
    x = 18,175.11

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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.