Home / 20,586.40-30,879.60-11,222.80

Finding the Fourth Proportional to 20,586.40, 30,879.60 and 11,222.80

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Solution

The fourth proportional to 20,586.40, 30,879.60 and 11,222.80 is: 16,834.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.40 : 30,879.60 = 11,222.80 : x
  2. Step 2: Convert to fraction form
    20,586.40/30,879.60 = 11,222.80/x
  3. Step 3: Cross multiply
    20,586.40x = 30,879.60 × 11,222.80
  4. Step 4: Simplify right side
    20,586.40x = 346,555,574.88
  5. Step 5: Solve for x
    x = 346,555,574.88/20,586.40
  6. Step 6: Final answer
    x = 16,834.20

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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.