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Finding the Fourth Proportional to 18,128.35, 25,017.18 and 10,170.58

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Solution

The fourth proportional to 18,128.35, 25,017.18 and 10,170.58 is: 14,035.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.35 : 25,017.18 = 10,170.58 : x
  2. Step 2: Convert to fraction form
    18,128.35/25,017.18 = 10,170.58/x
  3. Step 3: Cross multiply
    18,128.35x = 25,017.18 × 10,170.58
  4. Step 4: Simplify right side
    18,128.35x = 254,439,230.56
  5. Step 5: Solve for x
    x = 254,439,230.56/18,128.35
  6. Step 6: Final answer
    x = 14,035.43

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