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Finding the Fourth Proportional to 16,920.74, 25,383.54 and 5,234.88

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Solution

The fourth proportional to 16,920.74, 25,383.54 and 5,234.88 is: 7,853.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,920.74 : 25,383.54 = 5,234.88 : x
  2. Step 2: Convert to fraction form
    16,920.74/25,383.54 = 5,234.88/x
  3. Step 3: Cross multiply
    16,920.74x = 25,383.54 × 5,234.88
  4. Step 4: Simplify right side
    16,920.74x = 132,879,785.88
  5. Step 5: Solve for x
    x = 132,879,785.88/16,920.74
  6. Step 6: Final answer
    x = 7,853.07

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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.