Home / 12,211.36-18,313.70-4,815.65

Finding the Fourth Proportional to 12,211.36, 18,313.70 and 4,815.65

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Solution

The fourth proportional to 12,211.36, 18,313.70 and 4,815.65 is: 7,222.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.36 : 18,313.70 = 4,815.65 : x
  2. Step 2: Convert to fraction form
    12,211.36/18,313.70 = 4,815.65/x
  3. Step 3: Cross multiply
    12,211.36x = 18,313.70 × 4,815.65
  4. Step 4: Simplify right side
    12,211.36x = 88,192,391.11
  5. Step 5: Solve for x
    x = 88,192,391.11/12,211.36
  6. Step 6: Final answer
    x = 7,222.16

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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.