Home / 18,855.05-28,286.21-7,167.36

Finding the Fourth Proportional to 18,855.05, 28,286.21 and 7,167.36

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Solution

The fourth proportional to 18,855.05, 28,286.21 and 7,167.36 is: 10,752.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.05 : 28,286.21 = 7,167.36 : x
  2. Step 2: Convert to fraction form
    18,855.05/28,286.21 = 7,167.36/x
  3. Step 3: Cross multiply
    18,855.05x = 28,286.21 × 7,167.36
  4. Step 4: Simplify right side
    18,855.05x = 202,737,450.11
  5. Step 5: Solve for x
    x = 202,737,450.11/18,855.05
  6. Step 6: Final answer
    x = 10,752.42

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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.