Home / 12,108.48-18,162.71-3,788.56

Finding the Fourth Proportional to 12,108.48, 18,162.71 and 3,788.56

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Solution

The fourth proportional to 12,108.48, 18,162.71 and 3,788.56 is: 5,682.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.48 : 18,162.71 = 3,788.56 : x
  2. Step 2: Convert to fraction form
    12,108.48/18,162.71 = 3,788.56/x
  3. Step 3: Cross multiply
    12,108.48x = 18,162.71 × 3,788.56
  4. Step 4: Simplify right side
    12,108.48x = 68,810,516.60
  5. Step 5: Solve for x
    x = 68,810,516.60/12,108.48
  6. Step 6: Final answer
    x = 5,682.84

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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.