Home / 20,130.20-30,198.90-8,444.60

Finding the Fourth Proportional to 20,130.20, 30,198.90 and 8,444.60

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Solution

The fourth proportional to 20,130.20, 30,198.90 and 8,444.60 is: 12,668.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.20 : 30,198.90 = 8,444.60 : x
  2. Step 2: Convert to fraction form
    20,130.20/30,198.90 = 8,444.60/x
  3. Step 3: Cross multiply
    20,130.20x = 30,198.90 × 8,444.60
  4. Step 4: Simplify right side
    20,130.20x = 255,017,630.94
  5. Step 5: Solve for x
    x = 255,017,630.94/20,130.20
  6. Step 6: Final answer
    x = 12,668.41

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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.