Home / 28,898.20-43,347.30-8,121.70

Finding the Fourth Proportional to 28,898.20, 43,347.30 and 8,121.70

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Solution

The fourth proportional to 28,898.20, 43,347.30 and 8,121.70 is: 12,182.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898.20 : 43,347.30 = 8,121.70 : x
  2. Step 2: Convert to fraction form
    28,898.20/43,347.30 = 8,121.70/x
  3. Step 3: Cross multiply
    28,898.20x = 43,347.30 × 8,121.70
  4. Step 4: Simplify right side
    28,898.20x = 352,053,766.41
  5. Step 5: Solve for x
    x = 352,053,766.41/28,898.20
  6. Step 6: Final answer
    x = 12,182.55

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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.