Home / 39,194.20-54,087.78-21,289.06

Finding the Fourth Proportional to 39,194.20, 54,087.78 and 21,289.06

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Solution

The fourth proportional to 39,194.20, 54,087.78 and 21,289.06 is: 29,378.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,194.20 : 54,087.78 = 21,289.06 : x
  2. Step 2: Convert to fraction form
    39,194.20/54,087.78 = 21,289.06/x
  3. Step 3: Cross multiply
    39,194.20x = 54,087.78 × 21,289.06
  4. Step 4: Simplify right side
    39,194.20x = 1,151,477,993.69
  5. Step 5: Solve for x
    x = 1,151,477,993.69/39,194.20
  6. Step 6: Final answer
    x = 29,378.79

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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.