Home / 18,739.14-28,105.80-8,206.84

Finding the Fourth Proportional to 18,739.14, 28,105.80 and 8,206.84

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Solution

The fourth proportional to 18,739.14, 28,105.80 and 8,206.84 is: 12,308.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.14 : 28,105.80 = 8,206.84 : x
  2. Step 2: Convert to fraction form
    18,739.14/28,105.80 = 8,206.84/x
  3. Step 3: Cross multiply
    18,739.14x = 28,105.80 × 8,206.84
  4. Step 4: Simplify right side
    18,739.14x = 230,659,803.67
  5. Step 5: Solve for x
    x = 230,659,803.67/18,739.14
  6. Step 6: Final answer
    x = 12,308.99

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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.