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Finding the Fourth Proportional to 18,704.86, 25,812.03 and 10,321.18

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Solution

The fourth proportional to 18,704.86, 25,812.03 and 10,321.18 is: 14,242.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.86 : 25,812.03 = 10,321.18 : x
  2. Step 2: Convert to fraction form
    18,704.86/25,812.03 = 10,321.18/x
  3. Step 3: Cross multiply
    18,704.86x = 25,812.03 × 10,321.18
  4. Step 4: Simplify right side
    18,704.86x = 266,410,607.80
  5. Step 5: Solve for x
    x = 266,410,607.80/18,704.86
  6. Step 6: Final answer
    x = 14,242.85

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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.