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Finding the Fourth Proportional to 18,792.50, 28,193.07 and 6,480.50

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Solution

The fourth proportional to 18,792.50, 28,193.07 and 6,480.50 is: 9,722.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.50 : 28,193.07 = 6,480.50 : x
  2. Step 2: Convert to fraction form
    18,792.50/28,193.07 = 6,480.50/x
  3. Step 3: Cross multiply
    18,792.50x = 28,193.07 × 6,480.50
  4. Step 4: Simplify right side
    18,792.50x = 182,705,190.14
  5. Step 5: Solve for x
    x = 182,705,190.14/18,792.50
  6. Step 6: Final answer
    x = 9,722.24

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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.