Home / 11,128.30-16,668.15-4,879.96

Finding the Fourth Proportional to 11,128.30, 16,668.15 and 4,879.96

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Solution

The fourth proportional to 11,128.30, 16,668.15 and 4,879.96 is: 7,309.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.30 : 16,668.15 = 4,879.96 : x
  2. Step 2: Convert to fraction form
    11,128.30/16,668.15 = 4,879.96/x
  3. Step 3: Cross multiply
    11,128.30x = 16,668.15 × 4,879.96
  4. Step 4: Simplify right side
    11,128.30x = 81,339,905.27
  5. Step 5: Solve for x
    x = 81,339,905.27/11,128.30
  6. Step 6: Final answer
    x = 7,309.28

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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.