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Finding the Fourth Proportional to 30,081.41, 41,511 and 16,651.72

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Solution

The fourth proportional to 30,081.41, 41,511 and 16,651.72 is: 22,978.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,081.41 : 41,511 = 16,651.72 : x
  2. Step 2: Convert to fraction form
    30,081.41/41,511 = 16,651.72/x
  3. Step 3: Cross multiply
    30,081.41x = 41,511 × 16,651.72
  4. Step 4: Simplify right side
    30,081.41x = 691,229,341.37
  5. Step 5: Solve for x
    x = 691,229,341.37/30,081.41
  6. Step 6: Final answer
    x = 22,978.62

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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.