Home / 12,078.02-18,121.36-5,504.42

Finding the Fourth Proportional to 12,078.02, 18,121.36 and 5,504.42

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Solution

The fourth proportional to 12,078.02, 18,121.36 and 5,504.42 is: 8,258.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.02 : 18,121.36 = 5,504.42 : x
  2. Step 2: Convert to fraction form
    12,078.02/18,121.36 = 5,504.42/x
  3. Step 3: Cross multiply
    12,078.02x = 18,121.36 × 5,504.42
  4. Step 4: Simplify right side
    12,078.02x = 99,747,576.41
  5. Step 5: Solve for x
    x = 99,747,576.41/12,078.02
  6. Step 6: Final answer
    x = 8,258.60

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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.