Home / 18,912.92-28,356.23-8,377.19

Finding the Fourth Proportional to 18,912.92, 28,356.23 and 8,377.19

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Solution

The fourth proportional to 18,912.92, 28,356.23 and 8,377.19 is: 12,559.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.92 : 28,356.23 = 8,377.19 : x
  2. Step 2: Convert to fraction form
    18,912.92/28,356.23 = 8,377.19/x
  3. Step 3: Cross multiply
    18,912.92x = 28,356.23 × 8,377.19
  4. Step 4: Simplify right side
    18,912.92x = 237,545,526.39
  5. Step 5: Solve for x
    x = 237,545,526.39/18,912.92
  6. Step 6: Final answer
    x = 12,559.96

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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.