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Finding the Fourth Proportional to 40,993.92, 61,486.02 and 12,912.84

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Solution

The fourth proportional to 40,993.92, 61,486.02 and 12,912.84 is: 19,367.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,993.92 : 61,486.02 = 12,912.84 : x
  2. Step 2: Convert to fraction form
    40,993.92/61,486.02 = 12,912.84/x
  3. Step 3: Cross multiply
    40,993.92x = 61,486.02 × 12,912.84
  4. Step 4: Simplify right side
    40,993.92x = 793,959,138.50
  5. Step 5: Solve for x
    x = 793,959,138.50/40,993.92
  6. Step 6: Final answer
    x = 19,367.73

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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.