Home / 27,854.87-41,777.82-8,128.80

Finding the Fourth Proportional to 27,854.87, 41,777.82 and 8,128.80

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Solution

The fourth proportional to 27,854.87, 41,777.82 and 8,128.80 is: 12,191.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,854.87 : 41,777.82 = 8,128.80 : x
  2. Step 2: Convert to fraction form
    27,854.87/41,777.82 = 8,128.80/x
  3. Step 3: Cross multiply
    27,854.87x = 41,777.82 × 8,128.80
  4. Step 4: Simplify right side
    27,854.87x = 339,603,543.22
  5. Step 5: Solve for x
    x = 339,603,543.22/27,854.87
  6. Step 6: Final answer
    x = 12,191.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.