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Finding the Fourth Proportional to 18,405.84, 25,397.68 and 10,850.48

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Solution

The fourth proportional to 18,405.84, 25,397.68 and 10,850.48 is: 14,972.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405.84 : 25,397.68 = 10,850.48 : x
  2. Step 2: Convert to fraction form
    18,405.84/25,397.68 = 10,850.48/x
  3. Step 3: Cross multiply
    18,405.84x = 25,397.68 × 10,850.48
  4. Step 4: Simplify right side
    18,405.84x = 275,577,018.89
  5. Step 5: Solve for x
    x = 275,577,018.89/18,405.84
  6. Step 6: Final answer
    x = 14,972.26

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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.