Home / 12,038.44-18,045.35-4,138.58

Finding the Fourth Proportional to 12,038.44, 18,045.35 and 4,138.58

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Solution

The fourth proportional to 12,038.44, 18,045.35 and 4,138.58 is: 6,203.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,038.44 : 18,045.35 = 4,138.58 : x
  2. Step 2: Convert to fraction form
    12,038.44/18,045.35 = 4,138.58/x
  3. Step 3: Cross multiply
    12,038.44x = 18,045.35 × 4,138.58
  4. Step 4: Simplify right side
    12,038.44x = 74,682,124.60
  5. Step 5: Solve for x
    x = 74,682,124.60/12,038.44
  6. Step 6: Final answer
    x = 6,203.64

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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.