Home / 20,579.97-30,870.11-5,790.39

Finding the Fourth Proportional to 20,579.97, 30,870.11 and 5,790.39

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Solution

The fourth proportional to 20,579.97, 30,870.11 and 5,790.39 is: 8,685.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.97 : 30,870.11 = 5,790.39 : x
  2. Step 2: Convert to fraction form
    20,579.97/30,870.11 = 5,790.39/x
  3. Step 3: Cross multiply
    20,579.97x = 30,870.11 × 5,790.39
  4. Step 4: Simplify right side
    20,579.97x = 178,749,874.96
  5. Step 5: Solve for x
    x = 178,749,874.96/20,579.97
  6. Step 6: Final answer
    x = 8,685.62

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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.