Home / 18,884.72-28,314.92-7,191.56

Finding the Fourth Proportional to 18,884.72, 28,314.92 and 7,191.56

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Solution

The fourth proportional to 18,884.72, 28,314.92 and 7,191.56 is: 10,782.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,884.72 : 28,314.92 = 7,191.56 : x
  2. Step 2: Convert to fraction form
    18,884.72/28,314.92 = 7,191.56/x
  3. Step 3: Cross multiply
    18,884.72x = 28,314.92 × 7,191.56
  4. Step 4: Simplify right side
    18,884.72x = 203,628,446.08
  5. Step 5: Solve for x
    x = 203,628,446.08/18,884.72
  6. Step 6: Final answer
    x = 10,782.71

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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.