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Finding the Fourth Proportional to 18,660.99, 25,752.18 and 10,163.12

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Solution

The fourth proportional to 18,660.99, 25,752.18 and 10,163.12 is: 14,025.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.99 : 25,752.18 = 10,163.12 : x
  2. Step 2: Convert to fraction form
    18,660.99/25,752.18 = 10,163.12/x
  3. Step 3: Cross multiply
    18,660.99x = 25,752.18 × 10,163.12
  4. Step 4: Simplify right side
    18,660.99x = 261,722,495.60
  5. Step 5: Solve for x
    x = 261,722,495.60/18,660.99
  6. Step 6: Final answer
    x = 14,025.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.