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Finding the Fourth Proportional to 18,755.68, 28,121.63 and 9,393.16

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Solution

The fourth proportional to 18,755.68, 28,121.63 and 9,393.16 is: 14,083.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.68 : 28,121.63 = 9,393.16 : x
  2. Step 2: Convert to fraction form
    18,755.68/28,121.63 = 9,393.16/x
  3. Step 3: Cross multiply
    18,755.68x = 28,121.63 × 9,393.16
  4. Step 4: Simplify right side
    18,755.68x = 264,150,923.23
  5. Step 5: Solve for x
    x = 264,150,923.23/18,755.68
  6. Step 6: Final answer
    x = 14,083.78

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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.