Home / 12,161.95-18,245.36-3,842.74

Finding the Fourth Proportional to 12,161.95, 18,245.36 and 3,842.74

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Solution

The fourth proportional to 12,161.95, 18,245.36 and 3,842.74 is: 5,764.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.95 : 18,245.36 = 3,842.74 : x
  2. Step 2: Convert to fraction form
    12,161.95/18,245.36 = 3,842.74/x
  3. Step 3: Cross multiply
    12,161.95x = 18,245.36 × 3,842.74
  4. Step 4: Simplify right side
    12,161.95x = 70,112,174.69
  5. Step 5: Solve for x
    x = 70,112,174.69/12,161.95
  6. Step 6: Final answer
    x = 5,764.88

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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.