Home / 18,889.57-28,313.58-7,790.19

Finding the Fourth Proportional to 18,889.57, 28,313.58 and 7,790.19

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Solution

The fourth proportional to 18,889.57, 28,313.58 and 7,790.19 is: 11,676.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.57 : 28,313.58 = 7,790.19 : x
  2. Step 2: Convert to fraction form
    18,889.57/28,313.58 = 7,790.19/x
  3. Step 3: Cross multiply
    18,889.57x = 28,313.58 × 7,790.19
  4. Step 4: Simplify right side
    18,889.57x = 220,568,184.35
  5. Step 5: Solve for x
    x = 220,568,184.35/18,889.57
  6. Step 6: Final answer
    x = 11,676.72

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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.