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Finding the Fourth Proportional to 18,850.26, 28,286.28 and 10,090.08

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Solution

The fourth proportional to 18,850.26, 28,286.28 and 10,090.08 is: 15,140.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,850.26 : 28,286.28 = 10,090.08 : x
  2. Step 2: Convert to fraction form
    18,850.26/28,286.28 = 10,090.08/x
  3. Step 3: Cross multiply
    18,850.26x = 28,286.28 × 10,090.08
  4. Step 4: Simplify right side
    18,850.26x = 285,410,828.10
  5. Step 5: Solve for x
    x = 285,410,828.10/18,850.26
  6. Step 6: Final answer
    x = 15,140.95

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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.