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Finding the Fourth Proportional to 19,791.65, 29,678.25 and 11,474.05

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Solution

The fourth proportional to 19,791.65, 29,678.25 and 11,474.05 is: 17,205.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.65 : 29,678.25 = 11,474.05 : x
  2. Step 2: Convert to fraction form
    19,791.65/29,678.25 = 11,474.05/x
  3. Step 3: Cross multiply
    19,791.65x = 29,678.25 × 11,474.05
  4. Step 4: Simplify right side
    19,791.65x = 340,529,724.41
  5. Step 5: Solve for x
    x = 340,529,724.41/19,791.65
  6. Step 6: Final answer
    x = 17,205.73

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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.