Home / 12,414.72-18,628.40-8,257.56

Finding the Fourth Proportional to 12,414.72, 18,628.40 and 8,257.56

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Solution

The fourth proportional to 12,414.72, 18,628.40 and 8,257.56 is: 12,390.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,414.72 : 18,628.40 = 8,257.56 : x
  2. Step 2: Convert to fraction form
    12,414.72/18,628.40 = 8,257.56/x
  3. Step 3: Cross multiply
    12,414.72x = 18,628.40 × 8,257.56
  4. Step 4: Simplify right side
    12,414.72x = 153,825,130.70
  5. Step 5: Solve for x
    x = 153,825,130.70/12,414.72
  6. Step 6: Final answer
    x = 12,390.54

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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.