Home / 20,091.96-30,139.21-5,300.90

Finding the Fourth Proportional to 20,091.96, 30,139.21 and 5,300.90

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Solution

The fourth proportional to 20,091.96, 30,139.21 and 5,300.90 is: 7,951.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.96 : 30,139.21 = 5,300.90 : x
  2. Step 2: Convert to fraction form
    20,091.96/30,139.21 = 5,300.90/x
  3. Step 3: Cross multiply
    20,091.96x = 30,139.21 × 5,300.90
  4. Step 4: Simplify right side
    20,091.96x = 159,764,938.29
  5. Step 5: Solve for x
    x = 159,764,938.29/20,091.96
  6. Step 6: Final answer
    x = 7,951.69

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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.