Home / 12,161.49-18,231.40-4,771.23

Finding the Fourth Proportional to 12,161.49, 18,231.40 and 4,771.23

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Solution

The fourth proportional to 12,161.49, 18,231.40 and 4,771.23 is: 7,152.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.49 : 18,231.40 = 4,771.23 : x
  2. Step 2: Convert to fraction form
    12,161.49/18,231.40 = 4,771.23/x
  3. Step 3: Cross multiply
    12,161.49x = 18,231.40 × 4,771.23
  4. Step 4: Simplify right side
    12,161.49x = 86,986,202.62
  5. Step 5: Solve for x
    x = 86,986,202.62/12,161.49
  6. Step 6: Final answer
    x = 7,152.59

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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.