Home / 19,870.75-29,819.79-8,183.97

Finding the Fourth Proportional to 19,870.75, 29,819.79 and 8,183.97

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Solution

The fourth proportional to 19,870.75, 29,819.79 and 8,183.97 is: 12,281.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.75 : 29,819.79 = 8,183.97 : x
  2. Step 2: Convert to fraction form
    19,870.75/29,819.79 = 8,183.97/x
  3. Step 3: Cross multiply
    19,870.75x = 29,819.79 × 8,183.97
  4. Step 4: Simplify right side
    19,870.75x = 244,044,266.77
  5. Step 5: Solve for x
    x = 244,044,266.77/19,870.75
  6. Step 6: Final answer
    x = 12,281.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.