Home / 12,201.30-18,289.67-4,811.00

Finding the Fourth Proportional to 12,201.30, 18,289.67 and 4,811.00

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Solution

The fourth proportional to 12,201.30, 18,289.67 and 4,811.00 is: 7,211.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,201.30 : 18,289.67 = 4,811.00 : x
  2. Step 2: Convert to fraction form
    12,201.30/18,289.67 = 4,811.00/x
  3. Step 3: Cross multiply
    12,201.30x = 18,289.67 × 4,811.00
  4. Step 4: Simplify right side
    12,201.30x = 87,991,486.87
  5. Step 5: Solve for x
    x = 87,991,486.87/12,201.30
  6. Step 6: Final answer
    x = 7,211.65

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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.