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Finding the Fourth Proportional to 17,205.76, 25,812 and 5,518.08

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Solution

The fourth proportional to 17,205.76, 25,812 and 5,518.08 is: 8,278.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,205.76 : 25,812 = 5,518.08 : x
  2. Step 2: Convert to fraction form
    17,205.76/25,812 = 5,518.08/x
  3. Step 3: Cross multiply
    17,205.76x = 25,812 × 5,518.08
  4. Step 4: Simplify right side
    17,205.76x = 142,432,680.96
  5. Step 5: Solve for x
    x = 142,432,680.96/17,205.76
  6. Step 6: Final answer
    x = 8,278.20

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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.