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Finding the Fourth Proportional to 18,302.84, 25,257.96 and 9,919.34

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Solution

The fourth proportional to 18,302.84, 25,257.96 and 9,919.34 is: 13,688.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,302.84 : 25,257.96 = 9,919.34 : x
  2. Step 2: Convert to fraction form
    18,302.84/25,257.96 = 9,919.34/x
  3. Step 3: Cross multiply
    18,302.84x = 25,257.96 × 9,919.34
  4. Step 4: Simplify right side
    18,302.84x = 250,542,403.45
  5. Step 5: Solve for x
    x = 250,542,403.45/18,302.84
  6. Step 6: Final answer
    x = 13,688.71

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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.