Home / 39,195.94-54,089.49-21,290.55

Finding the Fourth Proportional to 39,195.94, 54,089.49 and 21,290.55

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Solution

The fourth proportional to 39,195.94, 54,089.49 and 21,290.55 is: 29,380.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,195.94 : 54,089.49 = 21,290.55 : x
  2. Step 2: Convert to fraction form
    39,195.94/54,089.49 = 21,290.55/x
  3. Step 3: Cross multiply
    39,195.94x = 54,089.49 × 21,290.55
  4. Step 4: Simplify right side
    39,195.94x = 1,151,594,991.32
  5. Step 5: Solve for x
    x = 1,151,594,991.32/39,195.94
  6. Step 6: Final answer
    x = 29,380.47

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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.