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Finding the Fourth Proportional to 12,318.08, 18,474.08 and 4,923.99

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Solution

The fourth proportional to 12,318.08, 18,474.08 and 4,923.99 is: 7,384.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.08 : 18,474.08 = 4,923.99 : x
  2. Step 2: Convert to fraction form
    12,318.08/18,474.08 = 4,923.99/x
  3. Step 3: Cross multiply
    12,318.08x = 18,474.08 × 4,923.99
  4. Step 4: Simplify right side
    12,318.08x = 90,966,160.56
  5. Step 5: Solve for x
    x = 90,966,160.56/12,318.08
  6. Step 6: Final answer
    x = 7,384.77

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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.