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Finding the Fourth Proportional to 18,792.72, 28,203.36 and 6,957.70

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Solution

The fourth proportional to 18,792.72, 28,203.36 and 6,957.70 is: 10,441.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.72 : 28,203.36 = 6,957.70 : x
  2. Step 2: Convert to fraction form
    18,792.72/28,203.36 = 6,957.70/x
  3. Step 3: Cross multiply
    18,792.72x = 28,203.36 × 6,957.70
  4. Step 4: Simplify right side
    18,792.72x = 196,230,517.87
  5. Step 5: Solve for x
    x = 196,230,517.87/18,792.72
  6. Step 6: Final answer
    x = 10,441.84

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1.5x scale

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.