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Finding the Fourth Proportional to 30,059.60, 41,469 and 18,115.88

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Solution

The fourth proportional to 30,059.60, 41,469 and 18,115.88 is: 24,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,059.60 : 41,469 = 18,115.88 : x
  2. Step 2: Convert to fraction form
    30,059.60/41,469 = 18,115.88/x
  3. Step 3: Cross multiply
    30,059.60x = 41,469 × 18,115.88
  4. Step 4: Simplify right side
    30,059.60x = 751,247,427.72
  5. Step 5: Solve for x
    x = 751,247,427.72/30,059.60
  6. Step 6: Final answer
    x = 24,991.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.