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Finding the Fourth Proportional to 12,110.10, 18,167.21 and 4,213.21

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Solution

The fourth proportional to 12,110.10, 18,167.21 and 4,213.21 is: 6,320.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,110.10 : 18,167.21 = 4,213.21 : x
  2. Step 2: Convert to fraction form
    12,110.10/18,167.21 = 4,213.21/x
  3. Step 3: Cross multiply
    12,110.10x = 18,167.21 × 4,213.21
  4. Step 4: Simplify right side
    12,110.10x = 76,542,270.84
  5. Step 5: Solve for x
    x = 76,542,270.84/12,110.10
  6. Step 6: Final answer
    x = 6,320.53

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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.