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Finding the Fourth Proportional to 18,137.61, 25,029.68 and 10,179.99

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Solution

The fourth proportional to 18,137.61, 25,029.68 and 10,179.99 is: 14,048.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,137.61 : 25,029.68 = 10,179.99 : x
  2. Step 2: Convert to fraction form
    18,137.61/25,029.68 = 10,179.99/x
  3. Step 3: Cross multiply
    18,137.61x = 25,029.68 × 10,179.99
  4. Step 4: Simplify right side
    18,137.61x = 254,801,841.20
  5. Step 5: Solve for x
    x = 254,801,841.20/18,137.61
  6. Step 6: Final answer
    x = 14,048.26

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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.