Home / 20,123.78-30,183.03-5,333.58

Finding the Fourth Proportional to 20,123.78, 30,183.03 and 5,333.58

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Solution

The fourth proportional to 20,123.78, 30,183.03 and 5,333.58 is: 7,999.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.78 : 30,183.03 = 5,333.58 : x
  2. Step 2: Convert to fraction form
    20,123.78/30,183.03 = 5,333.58/x
  3. Step 3: Cross multiply
    20,123.78x = 30,183.03 × 5,333.58
  4. Step 4: Simplify right side
    20,123.78x = 160,983,605.15
  5. Step 5: Solve for x
    x = 160,983,605.15/20,123.78
  6. Step 6: Final answer
    x = 7,999.67

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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.