Home / 20,668.39-30,982.85-6,619.34

Finding the Fourth Proportional to 20,668.39, 30,982.85 and 6,619.34

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Solution

The fourth proportional to 20,668.39, 30,982.85 and 6,619.34 is: 9,922.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.39 : 30,982.85 = 6,619.34 : x
  2. Step 2: Convert to fraction form
    20,668.39/30,982.85 = 6,619.34/x
  3. Step 3: Cross multiply
    20,668.39x = 30,982.85 × 6,619.34
  4. Step 4: Simplify right side
    20,668.39x = 205,086,018.32
  5. Step 5: Solve for x
    x = 205,086,018.32/20,668.39
  6. Step 6: Final answer
    x = 9,922.69

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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.