Home / 39,195.43-54,089.65-21,290.31

Finding the Fourth Proportional to 39,195.43, 54,089.65 and 21,290.31

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Solution

The fourth proportional to 39,195.43, 54,089.65 and 21,290.31 is: 29,380.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,195.43 : 54,089.65 = 21,290.31 : x
  2. Step 2: Convert to fraction form
    39,195.43/54,089.65 = 21,290.31/x
  3. Step 3: Cross multiply
    39,195.43x = 54,089.65 × 21,290.31
  4. Step 4: Simplify right side
    39,195.43x = 1,151,585,631.85
  5. Step 5: Solve for x
    x = 1,151,585,631.85/39,195.43
  6. Step 6: Final answer
    x = 29,380.61

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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.