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Finding the Fourth Proportional to 18,620.94, 27,928.67 and 7,527.38

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Solution

The fourth proportional to 18,620.94, 27,928.67 and 7,527.38 is: 11,289.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.94 : 27,928.67 = 7,527.38 : x
  2. Step 2: Convert to fraction form
    18,620.94/27,928.67 = 7,527.38/x
  3. Step 3: Cross multiply
    18,620.94x = 27,928.67 × 7,527.38
  4. Step 4: Simplify right side
    18,620.94x = 210,229,534.70
  5. Step 5: Solve for x
    x = 210,229,534.70/18,620.94
  6. Step 6: Final answer
    x = 11,289.95

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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.