Home / 18,912.90-28,373.40-5,766.60

Finding the Fourth Proportional to 18,912.90, 28,373.40 and 5,766.60

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Solution

The fourth proportional to 18,912.90, 28,373.40 and 5,766.60 is: 8,651.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.90 : 28,373.40 = 5,766.60 : x
  2. Step 2: Convert to fraction form
    18,912.90/28,373.40 = 5,766.60/x
  3. Step 3: Cross multiply
    18,912.90x = 28,373.40 × 5,766.60
  4. Step 4: Simplify right side
    18,912.90x = 163,618,048.44
  5. Step 5: Solve for x
    x = 163,618,048.44/18,912.90
  6. Step 6: Final answer
    x = 8,651.13

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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.