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Finding the Fourth Proportional to 16,640.78, 24,958.67 and 7,279.17

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Solution

The fourth proportional to 16,640.78, 24,958.67 and 7,279.17 is: 10,917.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,640.78 : 24,958.67 = 7,279.17 : x
  2. Step 2: Convert to fraction form
    16,640.78/24,958.67 = 7,279.17/x
  3. Step 3: Cross multiply
    16,640.78x = 24,958.67 × 7,279.17
  4. Step 4: Simplify right side
    16,640.78x = 181,678,271.91
  5. Step 5: Solve for x
    x = 181,678,271.91/16,640.78
  6. Step 6: Final answer
    x = 10,917.66

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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.