Home / 20,091.70-30,138.99-5,300.44

Finding the Fourth Proportional to 20,091.70, 30,138.99 and 5,300.44

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Solution

The fourth proportional to 20,091.70, 30,138.99 and 5,300.44 is: 7,951.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.70 : 30,138.99 = 5,300.44 : x
  2. Step 2: Convert to fraction form
    20,091.70/30,138.99 = 5,300.44/x
  3. Step 3: Cross multiply
    20,091.70x = 30,138.99 × 5,300.44
  4. Step 4: Simplify right side
    20,091.70x = 159,749,812.93
  5. Step 5: Solve for x
    x = 159,749,812.93/20,091.70
  6. Step 6: Final answer
    x = 7,951.04

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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.