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Finding the Fourth Proportional to 25,728.84, 38,592.99 and 8,200.17

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Solution

The fourth proportional to 25,728.84, 38,592.99 and 8,200.17 is: 12,300.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,728.84 : 38,592.99 = 8,200.17 : x
  2. Step 2: Convert to fraction form
    25,728.84/38,592.99 = 8,200.17/x
  3. Step 3: Cross multiply
    25,728.84x = 38,592.99 × 8,200.17
  4. Step 4: Simplify right side
    25,728.84x = 316,469,078.81
  5. Step 5: Solve for x
    x = 316,469,078.81/25,728.84
  6. Step 6: Final answer
    x = 12,300.17

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.