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Finding the Fourth Proportional to 18,675.91, 25,772.88 and 10,717.93

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Solution

The fourth proportional to 18,675.91, 25,772.88 and 10,717.93 is: 14,790.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.91 : 25,772.88 = 10,717.93 : x
  2. Step 2: Convert to fraction form
    18,675.91/25,772.88 = 10,717.93/x
  3. Step 3: Cross multiply
    18,675.91x = 25,772.88 × 10,717.93
  4. Step 4: Simplify right side
    18,675.91x = 276,231,923.74
  5. Step 5: Solve for x
    x = 276,231,923.74/18,675.91
  6. Step 6: Final answer
    x = 14,790.81

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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.