Home / 20,104.20-27,729.95-12,136.23

Finding the Fourth Proportional to 20,104.20, 27,729.95 and 12,136.23

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Solution

The fourth proportional to 20,104.20, 27,729.95 and 12,136.23 is: 16,739.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.20 : 27,729.95 = 12,136.23 : x
  2. Step 2: Convert to fraction form
    20,104.20/27,729.95 = 12,136.23/x
  3. Step 3: Cross multiply
    20,104.20x = 27,729.95 × 12,136.23
  4. Step 4: Simplify right side
    20,104.20x = 336,536,990.41
  5. Step 5: Solve for x
    x = 336,536,990.41/20,104.20
  6. Step 6: Final answer
    x = 16,739.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.