Home / 28,898.70-43,348.05-8,122.20

Finding the Fourth Proportional to 28,898.70, 43,348.05 and 8,122.20

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Solution

The fourth proportional to 28,898.70, 43,348.05 and 8,122.20 is: 12,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898.70 : 43,348.05 = 8,122.20 : x
  2. Step 2: Convert to fraction form
    28,898.70/43,348.05 = 8,122.20/x
  3. Step 3: Cross multiply
    28,898.70x = 43,348.05 × 8,122.20
  4. Step 4: Simplify right side
    28,898.70x = 352,081,531.71
  5. Step 5: Solve for x
    x = 352,081,531.71/28,898.70
  6. Step 6: Final answer
    x = 12,183.30

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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.