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Finding the Fourth Proportional to 17,216.45, 25,840.88 and 8,457.65

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Solution

The fourth proportional to 17,216.45, 25,840.88 and 8,457.65 is: 12,694.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,216.45 : 25,840.88 = 8,457.65 : x
  2. Step 2: Convert to fraction form
    17,216.45/25,840.88 = 8,457.65/x
  3. Step 3: Cross multiply
    17,216.45x = 25,840.88 × 8,457.65
  4. Step 4: Simplify right side
    17,216.45x = 218,552,947.24
  5. Step 5: Solve for x
    x = 218,552,947.24/17,216.45
  6. Step 6: Final answer
    x = 12,694.43

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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.