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Finding the Fourth Proportional to 30,151.44, 41,591.88 and 18,954

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Solution

The fourth proportional to 30,151.44, 41,591.88 and 18,954 is: 26,145.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,151.44 : 41,591.88 = 18,954 : x
  2. Step 2: Convert to fraction form
    30,151.44/41,591.88 = 18,954/x
  3. Step 3: Cross multiply
    30,151.44x = 41,591.88 × 18,954
  4. Step 4: Simplify right side
    30,151.44x = 788,332,493.52
  5. Step 5: Solve for x
    x = 788,332,493.52/30,151.44
  6. Step 6: Final answer
    x = 26,145.77

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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.