Home / 30,021.78-41,435.77-19,794.82

Finding the Fourth Proportional to 30,021.78, 41,435.77 and 19,794.82

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Solution

The fourth proportional to 30,021.78, 41,435.77 and 19,794.82 is: 27,320.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,021.78 : 41,435.77 = 19,794.82 : x
  2. Step 2: Convert to fraction form
    30,021.78/41,435.77 = 19,794.82/x
  3. Step 3: Cross multiply
    30,021.78x = 41,435.77 × 19,794.82
  4. Step 4: Simplify right side
    30,021.78x = 820,213,608.71
  5. Step 5: Solve for x
    x = 820,213,608.71/30,021.78
  6. Step 6: Final answer
    x = 27,320.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.