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Finding the Fourth Proportional to 25,674.10, 38,511.15 and 20,490.10

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Solution

The fourth proportional to 25,674.10, 38,511.15 and 20,490.10 is: 30,735.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,674.10 : 38,511.15 = 20,490.10 : x
  2. Step 2: Convert to fraction form
    25,674.10/38,511.15 = 20,490.10/x
  3. Step 3: Cross multiply
    25,674.10x = 38,511.15 × 20,490.10
  4. Step 4: Simplify right side
    25,674.10x = 789,097,314.62
  5. Step 5: Solve for x
    x = 789,097,314.62/25,674.10
  6. Step 6: Final answer
    x = 30,735.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.