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Finding the Fourth Proportional to 17,322.68, 25,990.06 and 5,478.28

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Solution

The fourth proportional to 17,322.68, 25,990.06 and 5,478.28 is: 8,219.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,322.68 : 25,990.06 = 5,478.28 : x
  2. Step 2: Convert to fraction form
    17,322.68/25,990.06 = 5,478.28/x
  3. Step 3: Cross multiply
    17,322.68x = 25,990.06 × 5,478.28
  4. Step 4: Simplify right side
    17,322.68x = 142,380,825.90
  5. Step 5: Solve for x
    x = 142,380,825.90/17,322.68
  6. Step 6: Final answer
    x = 8,219.33

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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.