Home / 39,725.03-54,821.94-21,821.69

Finding the Fourth Proportional to 39,725.03, 54,821.94 and 21,821.69

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Solution

The fourth proportional to 39,725.03, 54,821.94 and 21,821.69 is: 30,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,725.03 : 54,821.94 = 21,821.69 : x
  2. Step 2: Convert to fraction form
    39,725.03/54,821.94 = 21,821.69/x
  3. Step 3: Cross multiply
    39,725.03x = 54,821.94 × 21,821.69
  4. Step 4: Simplify right side
    39,725.03x = 1,196,307,379.88
  5. Step 5: Solve for x
    x = 1,196,307,379.88/39,725.03
  6. Step 6: Final answer
    x = 30,114.70

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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.