Home / 18,756.88-28,104.08-13,198.55

Finding the Fourth Proportional to 18,756.88, 28,104.08 and 13,198.55

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Solution

The fourth proportional to 18,756.88, 28,104.08 and 13,198.55 is: 19,775.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756.88 : 28,104.08 = 13,198.55 : x
  2. Step 2: Convert to fraction form
    18,756.88/28,104.08 = 13,198.55/x
  3. Step 3: Cross multiply
    18,756.88x = 28,104.08 × 13,198.55
  4. Step 4: Simplify right side
    18,756.88x = 370,933,105.08
  5. Step 5: Solve for x
    x = 370,933,105.08/18,756.88
  6. Step 6: Final answer
    x = 19,775.84

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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.