Home / 12,201.21-18,293.53-3,878.73

Finding the Fourth Proportional to 12,201.21, 18,293.53 and 3,878.73

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Solution

The fourth proportional to 12,201.21, 18,293.53 and 3,878.73 is: 5,815.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,201.21 : 18,293.53 = 3,878.73 : x
  2. Step 2: Convert to fraction form
    12,201.21/18,293.53 = 3,878.73/x
  3. Step 3: Cross multiply
    12,201.21x = 18,293.53 × 3,878.73
  4. Step 4: Simplify right side
    12,201.21x = 70,955,663.62
  5. Step 5: Solve for x
    x = 70,955,663.62/12,201.21
  6. Step 6: Final answer
    x = 5,815.46

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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.