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Finding the Fourth Proportional to 18,135.62, 25,028.42 and 10,069.68

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Solution

The fourth proportional to 18,135.62, 25,028.42 and 10,069.68 is: 13,896.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.62 : 25,028.42 = 10,069.68 : x
  2. Step 2: Convert to fraction form
    18,135.62/25,028.42 = 10,069.68/x
  3. Step 3: Cross multiply
    18,135.62x = 25,028.42 × 10,069.68
  4. Step 4: Simplify right side
    18,135.62x = 252,028,129.96
  5. Step 5: Solve for x
    x = 252,028,129.96/18,135.62
  6. Step 6: Final answer
    x = 13,896.86

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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.