Home / 12,427.68-18,678.24-8,281.44

Finding the Fourth Proportional to 12,427.68, 18,678.24 and 8,281.44

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Solution

The fourth proportional to 12,427.68, 18,678.24 and 8,281.44 is: 12,446.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.68 : 18,678.24 = 8,281.44 : x
  2. Step 2: Convert to fraction form
    12,427.68/18,678.24 = 8,281.44/x
  3. Step 3: Cross multiply
    12,427.68x = 18,678.24 × 8,281.44
  4. Step 4: Simplify right side
    12,427.68x = 154,682,723.87
  5. Step 5: Solve for x
    x = 154,682,723.87/12,427.68
  6. Step 6: Final answer
    x = 12,446.63

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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.