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Finding the Fourth Proportional to 19,719.24, 29,578.94 and 4,928.17

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Solution

The fourth proportional to 19,719.24, 29,578.94 and 4,928.17 is: 7,392.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.24 : 29,578.94 = 4,928.17 : x
  2. Step 2: Convert to fraction form
    19,719.24/29,578.94 = 4,928.17/x
  3. Step 3: Cross multiply
    19,719.24x = 29,578.94 × 4,928.17
  4. Step 4: Simplify right side
    19,719.24x = 145,770,020.10
  5. Step 5: Solve for x
    x = 145,770,020.10/19,719.24
  6. Step 6: Final answer
    x = 7,392.27

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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.