Home / 18,821.98-28,233.60-7,136.02

Finding the Fourth Proportional to 18,821.98, 28,233.60 and 7,136.02

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Solution

The fourth proportional to 18,821.98, 28,233.60 and 7,136.02 is: 10,704.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.98 : 28,233.60 = 7,136.02 : x
  2. Step 2: Convert to fraction form
    18,821.98/28,233.60 = 7,136.02/x
  3. Step 3: Cross multiply
    18,821.98x = 28,233.60 × 7,136.02
  4. Step 4: Simplify right side
    18,821.98x = 201,475,534.27
  5. Step 5: Solve for x
    x = 201,475,534.27/18,821.98
  6. Step 6: Final answer
    x = 10,704.27

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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.