Home / 27,855.75-38,446.23-21,793.89

Finding the Fourth Proportional to 27,855.75, 38,446.23 and 21,793.89

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Solution

The fourth proportional to 27,855.75, 38,446.23 and 21,793.89 is: 30,079.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,855.75 : 38,446.23 = 21,793.89 : x
  2. Step 2: Convert to fraction form
    27,855.75/38,446.23 = 21,793.89/x
  3. Step 3: Cross multiply
    27,855.75x = 38,446.23 × 21,793.89
  4. Step 4: Simplify right side
    27,855.75x = 837,892,907.53
  5. Step 5: Solve for x
    x = 837,892,907.53/27,855.75
  6. Step 6: Final answer
    x = 30,079.71

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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.