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Finding the Fourth Proportional to 30,249.54, 45,374.37 and 9,189.74

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Solution

The fourth proportional to 30,249.54, 45,374.37 and 9,189.74 is: 13,784.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,249.54 : 45,374.37 = 9,189.74 : x
  2. Step 2: Convert to fraction form
    30,249.54/45,374.37 = 9,189.74/x
  3. Step 3: Cross multiply
    30,249.54x = 45,374.37 × 9,189.74
  4. Step 4: Simplify right side
    30,249.54x = 416,978,436.09
  5. Step 5: Solve for x
    x = 416,978,436.09/30,249.54
  6. Step 6: Final answer
    x = 13,784.62

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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.