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Finding the Fourth Proportional to 17,072.64, 25,620.56 and 10,478.70

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Solution

The fourth proportional to 17,072.64, 25,620.56 and 10,478.70 is: 15,725.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,072.64 : 25,620.56 = 10,478.70 : x
  2. Step 2: Convert to fraction form
    17,072.64/25,620.56 = 10,478.70/x
  3. Step 3: Cross multiply
    17,072.64x = 25,620.56 × 10,478.70
  4. Step 4: Simplify right side
    17,072.64x = 268,470,162.07
  5. Step 5: Solve for x
    x = 268,470,162.07/17,072.64
  6. Step 6: Final answer
    x = 15,725.17

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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.