Home / 20,619.50-30,934.53-6,768.62

Finding the Fourth Proportional to 20,619.50, 30,934.53 and 6,768.62

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Solution

The fourth proportional to 20,619.50, 30,934.53 and 6,768.62 is: 10,154.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.50 : 30,934.53 = 6,768.62 : x
  2. Step 2: Convert to fraction form
    20,619.50/30,934.53 = 6,768.62/x
  3. Step 3: Cross multiply
    20,619.50x = 30,934.53 × 6,768.62
  4. Step 4: Simplify right side
    20,619.50x = 209,384,078.45
  5. Step 5: Solve for x
    x = 209,384,078.45/20,619.50
  6. Step 6: Final answer
    x = 10,154.66

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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.