Home / 13,213.69-19,794.12-7,945.81

Finding the Fourth Proportional to 13,213.69, 19,794.12 and 7,945.81

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Solution

The fourth proportional to 13,213.69, 19,794.12 and 7,945.81 is: 11,902.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.69 : 19,794.12 = 7,945.81 : x
  2. Step 2: Convert to fraction form
    13,213.69/19,794.12 = 7,945.81/x
  3. Step 3: Cross multiply
    13,213.69x = 19,794.12 × 7,945.81
  4. Step 4: Simplify right side
    13,213.69x = 157,280,316.64
  5. Step 5: Solve for x
    x = 157,280,316.64/13,213.69
  6. Step 6: Final answer
    x = 11,902.83

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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.