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Finding the Fourth Proportional to 19,299.91, 28,949.85 and 5,448.91

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Solution

The fourth proportional to 19,299.91, 28,949.85 and 5,448.91 is: 8,173.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,299.91 : 28,949.85 = 5,448.91 : x
  2. Step 2: Convert to fraction form
    19,299.91/28,949.85 = 5,448.91/x
  3. Step 3: Cross multiply
    19,299.91x = 28,949.85 × 5,448.91
  4. Step 4: Simplify right side
    19,299.91x = 157,745,127.16
  5. Step 5: Solve for x
    x = 157,745,127.16/19,299.91
  6. Step 6: Final answer
    x = 8,173.36

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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.