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Finding the Fourth Proportional to 18,901.92, 28,351.92 and 5,754

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Solution

The fourth proportional to 18,901.92, 28,351.92 and 5,754 is: 8,630.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.92 : 28,351.92 = 5,754 : x
  2. Step 2: Convert to fraction form
    18,901.92/28,351.92 = 5,754/x
  3. Step 3: Cross multiply
    18,901.92x = 28,351.92 × 5,754
  4. Step 4: Simplify right side
    18,901.92x = 163,136,947.68
  5. Step 5: Solve for x
    x = 163,136,947.68/18,901.92
  6. Step 6: Final answer
    x = 8,630.71

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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.