Home / 39,195.37-54,089.88-21,290.37

Finding the Fourth Proportional to 39,195.37, 54,089.88 and 21,290.37

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Solution

The fourth proportional to 39,195.37, 54,089.88 and 21,290.37 is: 29,380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,195.37 : 54,089.88 = 21,290.37 : x
  2. Step 2: Convert to fraction form
    39,195.37/54,089.88 = 21,290.37/x
  3. Step 3: Cross multiply
    39,195.37x = 54,089.88 × 21,290.37
  4. Step 4: Simplify right side
    39,195.37x = 1,151,593,427.91
  5. Step 5: Solve for x
    x = 1,151,593,427.91/39,195.37
  6. Step 6: Final answer
    x = 29,380.85

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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.