Home / 18,945.09-28,383.59-11,149.65

Finding the Fourth Proportional to 18,945.09, 28,383.59 and 11,149.65

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Solution

The fourth proportional to 18,945.09, 28,383.59 and 11,149.65 is: 16,704.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.09 : 28,383.59 = 11,149.65 : x
  2. Step 2: Convert to fraction form
    18,945.09/28,383.59 = 11,149.65/x
  3. Step 3: Cross multiply
    18,945.09x = 28,383.59 × 11,149.65
  4. Step 4: Simplify right side
    18,945.09x = 316,467,038.50
  5. Step 5: Solve for x
    x = 316,467,038.50/18,945.09
  6. Step 6: Final answer
    x = 16,704.44

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1.5x scale

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.