Home / 30,153.49-41,616.60-18,218.54

Finding the Fourth Proportional to 30,153.49, 41,616.60 and 18,218.54

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Solution

The fourth proportional to 30,153.49, 41,616.60 and 18,218.54 is: 25,144.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,153.49 : 41,616.60 = 18,218.54 : x
  2. Step 2: Convert to fraction form
    30,153.49/41,616.60 = 18,218.54/x
  3. Step 3: Cross multiply
    30,153.49x = 41,616.60 × 18,218.54
  4. Step 4: Simplify right side
    30,153.49x = 758,193,691.76
  5. Step 5: Solve for x
    x = 758,193,691.76/30,153.49
  6. Step 6: Final answer
    x = 25,144.48

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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.