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Finding the Fourth Proportional to 18,169.67, 25,072.89 and 10,213.09

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Solution

The fourth proportional to 18,169.67, 25,072.89 and 10,213.09 is: 14,093.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,169.67 : 25,072.89 = 10,213.09 : x
  2. Step 2: Convert to fraction form
    18,169.67/25,072.89 = 10,213.09/x
  3. Step 3: Cross multiply
    18,169.67x = 25,072.89 × 10,213.09
  4. Step 4: Simplify right side
    18,169.67x = 256,071,638.60
  5. Step 5: Solve for x
    x = 256,071,638.60/18,169.67
  6. Step 6: Final answer
    x = 14,093.36

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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.