Home / 18,811.20-28,217.21-6,965.56

Finding the Fourth Proportional to 18,811.20, 28,217.21 and 6,965.56

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Solution

The fourth proportional to 18,811.20, 28,217.21 and 6,965.56 is: 10,448.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.20 : 28,217.21 = 6,965.56 : x
  2. Step 2: Convert to fraction form
    18,811.20/28,217.21 = 6,965.56/x
  3. Step 3: Cross multiply
    18,811.20x = 28,217.21 × 6,965.56
  4. Step 4: Simplify right side
    18,811.20x = 196,548,669.29
  5. Step 5: Solve for x
    x = 196,548,669.29/18,811.20
  6. Step 6: Final answer
    x = 10,448.49

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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.