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Finding the Fourth Proportional to 19,144.79, 28,717.73 and 5,293.79

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Solution

The fourth proportional to 19,144.79, 28,717.73 and 5,293.79 is: 7,940.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,144.79 : 28,717.73 = 5,293.79 : x
  2. Step 2: Convert to fraction form
    19,144.79/28,717.73 = 5,293.79/x
  3. Step 3: Cross multiply
    19,144.79x = 28,717.73 × 5,293.79
  4. Step 4: Simplify right side
    19,144.79x = 152,025,631.90
  5. Step 5: Solve for x
    x = 152,025,631.90/19,144.79
  6. Step 6: Final answer
    x = 7,940.84

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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.