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Finding the Fourth Proportional to 30,165.57, 41,629.59 and 18,226.59

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Solution

The fourth proportional to 30,165.57, 41,629.59 and 18,226.59 is: 25,153.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,165.57 : 41,629.59 = 18,226.59 : x
  2. Step 2: Convert to fraction form
    30,165.57/41,629.59 = 18,226.59/x
  3. Step 3: Cross multiply
    30,165.57x = 41,629.59 × 18,226.59
  4. Step 4: Simplify right side
    30,165.57x = 758,765,468.80
  5. Step 5: Solve for x
    x = 758,765,468.80/30,165.57
  6. Step 6: Final answer
    x = 25,153.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.