Home / 20,119.86-30,169.67-6,968.70

Finding the Fourth Proportional to 20,119.86, 30,169.67 and 6,968.70

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Solution

The fourth proportional to 20,119.86, 30,169.67 and 6,968.70 is: 10,449.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.86 : 30,169.67 = 6,968.70 : x
  2. Step 2: Convert to fraction form
    20,119.86/30,169.67 = 6,968.70/x
  3. Step 3: Cross multiply
    20,119.86x = 30,169.67 × 6,968.70
  4. Step 4: Simplify right side
    20,119.86x = 210,243,344.49
  5. Step 5: Solve for x
    x = 210,243,344.49/20,119.86
  6. Step 6: Final answer
    x = 10,449.54

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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.