Home / 20,245.92-27,942.12-11,748.21

Finding the Fourth Proportional to 20,245.92, 27,942.12 and 11,748.21

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Solution

The fourth proportional to 20,245.92, 27,942.12 and 11,748.21 is: 16,214.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.92 : 27,942.12 = 11,748.21 : x
  2. Step 2: Convert to fraction form
    20,245.92/27,942.12 = 11,748.21/x
  3. Step 3: Cross multiply
    20,245.92x = 27,942.12 × 11,748.21
  4. Step 4: Simplify right side
    20,245.92x = 328,269,893.61
  5. Step 5: Solve for x
    x = 328,269,893.61/20,245.92
  6. Step 6: Final answer
    x = 16,214.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.