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Finding the Fourth Proportional to 18,993.26, 28,481.63 and 7,298.25

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Solution

The fourth proportional to 18,993.26, 28,481.63 and 7,298.25 is: 10,944.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.26 : 28,481.63 = 7,298.25 : x
  2. Step 2: Convert to fraction form
    18,993.26/28,481.63 = 7,298.25/x
  3. Step 3: Cross multiply
    18,993.26x = 28,481.63 × 7,298.25
  4. Step 4: Simplify right side
    18,993.26x = 207,866,019.66
  5. Step 5: Solve for x
    x = 207,866,019.66/18,993.26
  6. Step 6: Final answer
    x = 10,944.20

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1.5x scale

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.