Home / 20,118.70-30,174.75-5,328.54

Finding the Fourth Proportional to 20,118.70, 30,174.75 and 5,328.54

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Solution

The fourth proportional to 20,118.70, 30,174.75 and 5,328.54 is: 7,991.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.70 : 30,174.75 = 5,328.54 : x
  2. Step 2: Convert to fraction form
    20,118.70/30,174.75 = 5,328.54/x
  3. Step 3: Cross multiply
    20,118.70x = 30,174.75 × 5,328.54
  4. Step 4: Simplify right side
    20,118.70x = 160,787,362.37
  5. Step 5: Solve for x
    x = 160,787,362.37/20,118.70
  6. Step 6: Final answer
    x = 7,991.94

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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.