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Finding the Fourth Proportional to 18,405.04, 25,398.18 and 10,447.09

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Solution

The fourth proportional to 18,405.04, 25,398.18 and 10,447.09 is: 14,416.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405.04 : 25,398.18 = 10,447.09 : x
  2. Step 2: Convert to fraction form
    18,405.04/25,398.18 = 10,447.09/x
  3. Step 3: Cross multiply
    18,405.04x = 25,398.18 × 10,447.09
  4. Step 4: Simplify right side
    18,405.04x = 265,337,072.30
  5. Step 5: Solve for x
    x = 265,337,072.30/18,405.04
  6. Step 6: Final answer
    x = 14,416.54

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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.