Home / 19,026.80-28,540.20-4,986.80

Finding the Fourth Proportional to 19,026.80, 28,540.20 and 4,986.80

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Solution

The fourth proportional to 19,026.80, 28,540.20 and 4,986.80 is: 7,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,026.80 : 28,540.20 = 4,986.80 : x
  2. Step 2: Convert to fraction form
    19,026.80/28,540.20 = 4,986.80/x
  3. Step 3: Cross multiply
    19,026.80x = 28,540.20 × 4,986.80
  4. Step 4: Simplify right side
    19,026.80x = 142,324,269.36
  5. Step 5: Solve for x
    x = 142,324,269.36/19,026.80
  6. Step 6: Final answer
    x = 7,480.20

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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.