Home / 20,015.72-30,028.78-5,975.75

Finding the Fourth Proportional to 20,015.72, 30,028.78 and 5,975.75

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Solution

The fourth proportional to 20,015.72, 30,028.78 and 5,975.75 is: 8,965.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.72 : 30,028.78 = 5,975.75 : x
  2. Step 2: Convert to fraction form
    20,015.72/30,028.78 = 5,975.75/x
  3. Step 3: Cross multiply
    20,015.72x = 30,028.78 × 5,975.75
  4. Step 4: Simplify right side
    20,015.72x = 179,444,446.56
  5. Step 5: Solve for x
    x = 179,444,446.56/20,015.72
  6. Step 6: Final answer
    x = 8,965.18

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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.