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Finding the Fourth Proportional to 17,190.50, 25,790.07 and 4,878.50

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Solution

The fourth proportional to 17,190.50, 25,790.07 and 4,878.50 is: 7,318.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,190.50 : 25,790.07 = 4,878.50 : x
  2. Step 2: Convert to fraction form
    17,190.50/25,790.07 = 4,878.50/x
  3. Step 3: Cross multiply
    17,190.50x = 25,790.07 × 4,878.50
  4. Step 4: Simplify right side
    17,190.50x = 125,816,856.50
  5. Step 5: Solve for x
    x = 125,816,856.50/17,190.50
  6. Step 6: Final answer
    x = 7,318.98

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Why These Related Problems?

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