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Finding the Fourth Proportional to 19,130.62, 28,696.44 and 5,982.99

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Solution

The fourth proportional to 19,130.62, 28,696.44 and 5,982.99 is: 8,974.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,130.62 : 28,696.44 = 5,982.99 : x
  2. Step 2: Convert to fraction form
    19,130.62/28,696.44 = 5,982.99/x
  3. Step 3: Cross multiply
    19,130.62x = 28,696.44 × 5,982.99
  4. Step 4: Simplify right side
    19,130.62x = 171,690,513.56
  5. Step 5: Solve for x
    x = 171,690,513.56/19,130.62
  6. Step 6: Final answer
    x = 8,974.65

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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.