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Finding the Fourth Proportional to 18,391.44, 27,583.05 and 8,529.44

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Solution

The fourth proportional to 18,391.44, 27,583.05 and 8,529.44 is: 12,792.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.44 : 27,583.05 = 8,529.44 : x
  2. Step 2: Convert to fraction form
    18,391.44/27,583.05 = 8,529.44/x
  3. Step 3: Cross multiply
    18,391.44x = 27,583.05 × 8,529.44
  4. Step 4: Simplify right side
    18,391.44x = 235,267,969.99
  5. Step 5: Solve for x
    x = 235,267,969.99/18,391.44
  6. Step 6: Final answer
    x = 12,792.25

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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.