Home / 39,638.82-54,701.17-21,733.78

Finding the Fourth Proportional to 39,638.82, 54,701.17 and 21,733.78

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Solution

The fourth proportional to 39,638.82, 54,701.17 and 21,733.78 is: 29,992.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,638.82 : 54,701.17 = 21,733.78 : x
  2. Step 2: Convert to fraction form
    39,638.82/54,701.17 = 21,733.78/x
  3. Step 3: Cross multiply
    39,638.82x = 54,701.17 × 21,733.78
  4. Step 4: Simplify right side
    39,638.82x = 1,188,863,305.18
  5. Step 5: Solve for x
    x = 1,188,863,305.18/39,638.82
  6. Step 6: Final answer
    x = 29,992.40

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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.