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Finding the Fourth Proportional to 19,832.72, 27,366.17 and 12,768.71

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Solution

The fourth proportional to 19,832.72, 27,366.17 and 12,768.71 is: 17,618.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,832.72 : 27,366.17 = 12,768.71 : x
  2. Step 2: Convert to fraction form
    19,832.72/27,366.17 = 12,768.71/x
  3. Step 3: Cross multiply
    19,832.72x = 27,366.17 × 12,768.71
  4. Step 4: Simplify right side
    19,832.72x = 349,430,487.87
  5. Step 5: Solve for x
    x = 349,430,487.87/19,832.72
  6. Step 6: Final answer
    x = 17,618.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.