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Finding the Fourth Proportional to 19,144.62, 28,716.93 and 5,293.62

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Solution

The fourth proportional to 19,144.62, 28,716.93 and 5,293.62 is: 7,940.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,144.62 : 28,716.93 = 5,293.62 : x
  2. Step 2: Convert to fraction form
    19,144.62/28,716.93 = 5,293.62/x
  3. Step 3: Cross multiply
    19,144.62x = 28,716.93 × 5,293.62
  4. Step 4: Simplify right side
    19,144.62x = 152,016,514.99
  5. Step 5: Solve for x
    x = 152,016,514.99/19,144.62
  6. Step 6: Final answer
    x = 7,940.43

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Double scale
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Similar ratio
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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.