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Finding the Fourth Proportional to 19,993.50, 29,990.39 and 6,845.99

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Solution

The fourth proportional to 19,993.50, 29,990.39 and 6,845.99 is: 10,269.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.50 : 29,990.39 = 6,845.99 : x
  2. Step 2: Convert to fraction form
    19,993.50/29,990.39 = 6,845.99/x
  3. Step 3: Cross multiply
    19,993.50x = 29,990.39 × 6,845.99
  4. Step 4: Simplify right side
    19,993.50x = 205,313,725.85
  5. Step 5: Solve for x
    x = 205,313,725.85/19,993.50
  6. Step 6: Final answer
    x = 10,269.02

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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.