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Finding the Fourth Proportional to 19,704.96, 29,557.44 and 13,143.96

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Solution

The fourth proportional to 19,704.96, 29,557.44 and 13,143.96 is: 19,715.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,704.96 : 29,557.44 = 13,143.96 : x
  2. Step 2: Convert to fraction form
    19,704.96/29,557.44 = 13,143.96/x
  3. Step 3: Cross multiply
    19,704.96x = 29,557.44 × 13,143.96
  4. Step 4: Simplify right side
    19,704.96x = 388,501,809.06
  5. Step 5: Solve for x
    x = 388,501,809.06/19,704.96
  6. Step 6: Final answer
    x = 19,715.94

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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.