Home / 39,786.67-54,904.07-21,880.61

Finding the Fourth Proportional to 39,786.67, 54,904.07 and 21,880.61

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Solution

The fourth proportional to 39,786.67, 54,904.07 and 21,880.61 is: 30,194.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,786.67 : 54,904.07 = 21,880.61 : x
  2. Step 2: Convert to fraction form
    39,786.67/54,904.07 = 21,880.61/x
  3. Step 3: Cross multiply
    39,786.67x = 54,904.07 × 21,880.61
  4. Step 4: Simplify right side
    39,786.67x = 1,201,334,350.61
  5. Step 5: Solve for x
    x = 1,201,334,350.61/39,786.67
  6. Step 6: Final answer
    x = 30,194.39

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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.