Home / 12,121.38-18,184.50-4,329.99

Finding the Fourth Proportional to 12,121.38, 18,184.50 and 4,329.99

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Solution

The fourth proportional to 12,121.38, 18,184.50 and 4,329.99 is: 6,495.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.38 : 18,184.50 = 4,329.99 : x
  2. Step 2: Convert to fraction form
    12,121.38/18,184.50 = 4,329.99/x
  3. Step 3: Cross multiply
    12,121.38x = 18,184.50 × 4,329.99
  4. Step 4: Simplify right side
    12,121.38x = 78,738,703.16
  5. Step 5: Solve for x
    x = 78,738,703.16/12,121.38
  6. Step 6: Final answer
    x = 6,495.85

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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.