Home / 20,519.80-30,784.52-6,668.80

Finding the Fourth Proportional to 20,519.80, 30,784.52 and 6,668.80

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Solution

The fourth proportional to 20,519.80, 30,784.52 and 6,668.80 is: 10,004.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.80 : 30,784.52 = 6,668.80 : x
  2. Step 2: Convert to fraction form
    20,519.80/30,784.52 = 6,668.80/x
  3. Step 3: Cross multiply
    20,519.80x = 30,784.52 × 6,668.80
  4. Step 4: Simplify right side
    20,519.80x = 205,295,806.98
  5. Step 5: Solve for x
    x = 205,295,806.98/20,519.80
  6. Step 6: Final answer
    x = 10,004.77

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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.