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Finding the Fourth Proportional to 18,755.14, 25,874.31 and 12,039.34

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Solution

The fourth proportional to 18,755.14, 25,874.31 and 12,039.34 is: 16,609.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.14 : 25,874.31 = 12,039.34 : x
  2. Step 2: Convert to fraction form
    18,755.14/25,874.31 = 12,039.34/x
  3. Step 3: Cross multiply
    18,755.14x = 25,874.31 × 12,039.34
  4. Step 4: Simplify right side
    18,755.14x = 311,509,615.36
  5. Step 5: Solve for x
    x = 311,509,615.36/18,755.14
  6. Step 6: Final answer
    x = 16,609.29

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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.