Home / 38,629.20-57,938.40-12,336.60

Finding the Fourth Proportional to 38,629.20, 57,938.40 and 12,336.60

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Solution

The fourth proportional to 38,629.20, 57,938.40 and 12,336.60 is: 18,503.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,629.20 : 57,938.40 = 12,336.60 : x
  2. Step 2: Convert to fraction form
    38,629.20/57,938.40 = 12,336.60/x
  3. Step 3: Cross multiply
    38,629.20x = 57,938.40 × 12,336.60
  4. Step 4: Simplify right side
    38,629.20x = 714,762,865.44
  5. Step 5: Solve for x
    x = 714,762,865.44/38,629.20
  6. Step 6: Final answer
    x = 18,503.18

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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.