Home / 30,154.49-41,617.98-18,219.54

Finding the Fourth Proportional to 30,154.49, 41,617.98 and 18,219.54

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Solution

The fourth proportional to 30,154.49, 41,617.98 and 18,219.54 is: 25,145.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.49 : 41,617.98 = 18,219.54 : x
  2. Step 2: Convert to fraction form
    30,154.49/41,617.98 = 18,219.54/x
  3. Step 3: Cross multiply
    30,154.49x = 41,617.98 × 18,219.54
  4. Step 4: Simplify right side
    30,154.49x = 758,260,451.33
  5. Step 5: Solve for x
    x = 758,260,451.33/30,154.49
  6. Step 6: Final answer
    x = 25,145.86

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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.