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Finding the Fourth Proportional to 19,161.63, 28,746.09 and 7,473.94

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Solution

The fourth proportional to 19,161.63, 28,746.09 and 7,473.94 is: 11,212.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,161.63 : 28,746.09 = 7,473.94 : x
  2. Step 2: Convert to fraction form
    19,161.63/28,746.09 = 7,473.94/x
  3. Step 3: Cross multiply
    19,161.63x = 28,746.09 × 7,473.94
  4. Step 4: Simplify right side
    19,161.63x = 214,846,480.03
  5. Step 5: Solve for x
    x = 214,846,480.03/19,161.63
  6. Step 6: Final answer
    x = 11,212.33

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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.