Home / 12,161.78-18,242.67-3,842.64

Finding the Fourth Proportional to 12,161.78, 18,242.67 and 3,842.64

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Solution

The fourth proportional to 12,161.78, 18,242.67 and 3,842.64 is: 5,763.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.78 : 18,242.67 = 3,842.64 : x
  2. Step 2: Convert to fraction form
    12,161.78/18,242.67 = 3,842.64/x
  3. Step 3: Cross multiply
    12,161.78x = 18,242.67 × 3,842.64
  4. Step 4: Simplify right side
    12,161.78x = 70,100,013.45
  5. Step 5: Solve for x
    x = 70,100,013.45/12,161.78
  6. Step 6: Final answer
    x = 5,763.96

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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.