Home / 39,195.22-54,089.70-21,290.22

Finding the Fourth Proportional to 39,195.22, 54,089.70 and 21,290.22

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Solution

The fourth proportional to 39,195.22, 54,089.70 and 21,290.22 is: 29,380.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,195.22 : 54,089.70 = 21,290.22 : x
  2. Step 2: Convert to fraction form
    39,195.22/54,089.70 = 21,290.22/x
  3. Step 3: Cross multiply
    39,195.22x = 54,089.70 × 21,290.22
  4. Step 4: Simplify right side
    39,195.22x = 1,151,581,612.73
  5. Step 5: Solve for x
    x = 1,151,581,612.73/39,195.22
  6. Step 6: Final answer
    x = 29,380.66

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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.