Home / 12,120.18-18,180.81-3,801.03

Finding the Fourth Proportional to 12,120.18, 18,180.81 and 3,801.03

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Solution

The fourth proportional to 12,120.18, 18,180.81 and 3,801.03 is: 5,701.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.18 : 18,180.81 = 3,801.03 : x
  2. Step 2: Convert to fraction form
    12,120.18/18,180.81 = 3,801.03/x
  3. Step 3: Cross multiply
    12,120.18x = 18,180.81 × 3,801.03
  4. Step 4: Simplify right side
    12,120.18x = 69,105,804.23
  5. Step 5: Solve for x
    x = 69,105,804.23/12,120.18
  6. Step 6: Final answer
    x = 5,701.71

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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.