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Finding the Fourth Proportional to 23,990.34, 33,106.61 and 13,379.99

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Solution

The fourth proportional to 23,990.34, 33,106.61 and 13,379.99 is: 18,464.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,990.34 : 33,106.61 = 13,379.99 : x
  2. Step 2: Convert to fraction form
    23,990.34/33,106.61 = 13,379.99/x
  3. Step 3: Cross multiply
    23,990.34x = 33,106.61 × 13,379.99
  4. Step 4: Simplify right side
    23,990.34x = 442,965,878.30
  5. Step 5: Solve for x
    x = 442,965,878.30/23,990.34
  6. Step 6: Final answer
    x = 18,464.34

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