Home / 18,930.37-28,395.96-4,890.70

Finding the Fourth Proportional to 18,930.37, 28,395.96 and 4,890.70

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Solution

The fourth proportional to 18,930.37, 28,395.96 and 4,890.70 is: 7,336.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.37 : 28,395.96 = 4,890.70 : x
  2. Step 2: Convert to fraction form
    18,930.37/28,395.96 = 4,890.70/x
  3. Step 3: Cross multiply
    18,930.37x = 28,395.96 × 4,890.70
  4. Step 4: Simplify right side
    18,930.37x = 138,876,121.57
  5. Step 5: Solve for x
    x = 138,876,121.57/18,930.37
  6. Step 6: Final answer
    x = 7,336.15

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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.