Home / 12,112.60-18,168.87-3,347.48

Finding the Fourth Proportional to 12,112.60, 18,168.87 and 3,347.48

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Solution

The fourth proportional to 12,112.60, 18,168.87 and 3,347.48 is: 5,021.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.60 : 18,168.87 = 3,347.48 : x
  2. Step 2: Convert to fraction form
    12,112.60/18,168.87 = 3,347.48/x
  3. Step 3: Cross multiply
    12,112.60x = 18,168.87 × 3,347.48
  4. Step 4: Simplify right side
    12,112.60x = 60,819,974.37
  5. Step 5: Solve for x
    x = 60,819,974.37/12,112.60
  6. Step 6: Final answer
    x = 5,021.22

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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.