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Finding the Fourth Proportional to 29,992.80, 44,940.60 and 18,879.60

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Solution

The fourth proportional to 29,992.80, 44,940.60 and 18,879.60 is: 28,288.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,992.80 : 44,940.60 = 18,879.60 : x
  2. Step 2: Convert to fraction form
    29,992.80/44,940.60 = 18,879.60/x
  3. Step 3: Cross multiply
    29,992.80x = 44,940.60 × 18,879.60
  4. Step 4: Simplify right side
    29,992.80x = 848,460,551.76
  5. Step 5: Solve for x
    x = 848,460,551.76/29,992.80
  6. Step 6: Final answer
    x = 28,288.81

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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.