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Finding the Fourth Proportional to 12,361.20, 18,541.80 and 3,596.40

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Solution

The fourth proportional to 12,361.20, 18,541.80 and 3,596.40 is: 5,394.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,361.20 : 18,541.80 = 3,596.40 : x
  2. Step 2: Convert to fraction form
    12,361.20/18,541.80 = 3,596.40/x
  3. Step 3: Cross multiply
    12,361.20x = 18,541.80 × 3,596.40
  4. Step 4: Simplify right side
    12,361.20x = 66,683,729.52
  5. Step 5: Solve for x
    x = 66,683,729.52/12,361.20
  6. Step 6: Final answer
    x = 5,394.60

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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.