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Finding the Fourth Proportional to 18,908.02, 28,322.74 and 15,976.02

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Solution

The fourth proportional to 18,908.02, 28,322.74 and 15,976.02 is: 23,930.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.02 : 28,322.74 = 15,976.02 : x
  2. Step 2: Convert to fraction form
    18,908.02/28,322.74 = 15,976.02/x
  3. Step 3: Cross multiply
    18,908.02x = 28,322.74 × 15,976.02
  4. Step 4: Simplify right side
    18,908.02x = 452,484,660.69
  5. Step 5: Solve for x
    x = 452,484,660.69/18,908.02
  6. Step 6: Final answer
    x = 23,930.83

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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.