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Finding the Fourth Proportional to 19,305.69, 28,940.04 and 6,149.54

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Solution

The fourth proportional to 19,305.69, 28,940.04 and 6,149.54 is: 9,218.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,305.69 : 28,940.04 = 6,149.54 : x
  2. Step 2: Convert to fraction form
    19,305.69/28,940.04 = 6,149.54/x
  3. Step 3: Cross multiply
    19,305.69x = 28,940.04 × 6,149.54
  4. Step 4: Simplify right side
    19,305.69x = 177,967,933.58
  5. Step 5: Solve for x
    x = 177,967,933.58/19,305.69
  6. Step 6: Final answer
    x = 9,218.42

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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.