Home / 20,190.96-30,277.80-7,039.44

Finding the Fourth Proportional to 20,190.96, 30,277.80 and 7,039.44

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Solution

The fourth proportional to 20,190.96, 30,277.80 and 7,039.44 is: 10,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.96 : 30,277.80 = 7,039.44 : x
  2. Step 2: Convert to fraction form
    20,190.96/30,277.80 = 7,039.44/x
  3. Step 3: Cross multiply
    20,190.96x = 30,277.80 × 7,039.44
  4. Step 4: Simplify right side
    20,190.96x = 213,138,756.43
  5. Step 5: Solve for x
    x = 213,138,756.43/20,190.96
  6. Step 6: Final answer
    x = 10,556.15

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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.