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Finding the Fourth Proportional to 18,292.88, 27,440.94 and 5,815.64

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Solution

The fourth proportional to 18,292.88, 27,440.94 and 5,815.64 is: 8,723.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,292.88 : 27,440.94 = 5,815.64 : x
  2. Step 2: Convert to fraction form
    18,292.88/27,440.94 = 5,815.64/x
  3. Step 3: Cross multiply
    18,292.88x = 27,440.94 × 5,815.64
  4. Step 4: Simplify right side
    18,292.88x = 159,586,628.30
  5. Step 5: Solve for x
    x = 159,586,628.30/18,292.88
  6. Step 6: Final answer
    x = 8,723.98

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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.