Home / 39,725.70-54,821.82-21,821.07

Finding the Fourth Proportional to 39,725.70, 54,821.82 and 21,821.07

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Solution

The fourth proportional to 39,725.70, 54,821.82 and 21,821.07 is: 30,113.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,725.70 : 54,821.82 = 21,821.07 : x
  2. Step 2: Convert to fraction form
    39,725.70/54,821.82 = 21,821.07/x
  3. Step 3: Cross multiply
    39,725.70x = 54,821.82 × 21,821.07
  4. Step 4: Simplify right side
    39,725.70x = 1,196,270,771.75
  5. Step 5: Solve for x
    x = 1,196,270,771.75/39,725.70
  6. Step 6: Final answer
    x = 30,113.27

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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.