Home / 13,936.07-20,891.78-5,164.85

Finding the Fourth Proportional to 13,936.07, 20,891.78 and 5,164.85

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Solution

The fourth proportional to 13,936.07, 20,891.78 and 5,164.85 is: 7,742.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,936.07 : 20,891.78 = 5,164.85 : x
  2. Step 2: Convert to fraction form
    13,936.07/20,891.78 = 5,164.85/x
  3. Step 3: Cross multiply
    13,936.07x = 20,891.78 × 5,164.85
  4. Step 4: Simplify right side
    13,936.07x = 107,902,779.65
  5. Step 5: Solve for x
    x = 107,902,779.65/13,936.07
  6. Step 6: Final answer
    x = 7,742.70

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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.