Home / 18,129.89-27,169.53-9,791.96

Finding the Fourth Proportional to 18,129.89, 27,169.53 and 9,791.96

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Solution

The fourth proportional to 18,129.89, 27,169.53 and 9,791.96 is: 14,674.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.89 : 27,169.53 = 9,791.96 : x
  2. Step 2: Convert to fraction form
    18,129.89/27,169.53 = 9,791.96/x
  3. Step 3: Cross multiply
    18,129.89x = 27,169.53 × 9,791.96
  4. Step 4: Simplify right side
    18,129.89x = 266,042,815.13
  5. Step 5: Solve for x
    x = 266,042,815.13/18,129.89
  6. Step 6: Final answer
    x = 14,674.27

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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.