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Finding the Fourth Proportional to 17,180.48, 25,780.44 and 7,318.74

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Solution

The fourth proportional to 17,180.48, 25,780.44 and 7,318.74 is: 10,982.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,180.48 : 25,780.44 = 7,318.74 : x
  2. Step 2: Convert to fraction form
    17,180.48/25,780.44 = 7,318.74/x
  3. Step 3: Cross multiply
    17,180.48x = 25,780.44 × 7,318.74
  4. Step 4: Simplify right side
    17,180.48x = 188,680,337.45
  5. Step 5: Solve for x
    x = 188,680,337.45/17,180.48
  6. Step 6: Final answer
    x = 10,982.25

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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.