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Finding the Fourth Proportional to 18,614.79, 27,923.54 and 6,928

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Solution

The fourth proportional to 18,614.79, 27,923.54 and 6,928 is: 10,392.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,614.79 : 27,923.54 = 6,928 : x
  2. Step 2: Convert to fraction form
    18,614.79/27,923.54 = 6,928/x
  3. Step 3: Cross multiply
    18,614.79x = 27,923.54 × 6,928
  4. Step 4: Simplify right side
    18,614.79x = 193,454,285.12
  5. Step 5: Solve for x
    x = 193,454,285.12/18,614.79
  6. Step 6: Final answer
    x = 10,392.50

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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.