Home / 27,128.76-40,687.66-18,883.77

Finding the Fourth Proportional to 27,128.76, 40,687.66 and 18,883.77

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Solution

The fourth proportional to 27,128.76, 40,687.66 and 18,883.77 is: 28,321.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,128.76 : 40,687.66 = 18,883.77 : x
  2. Step 2: Convert to fraction form
    27,128.76/40,687.66 = 18,883.77/x
  3. Step 3: Cross multiply
    27,128.76x = 40,687.66 × 18,883.77
  4. Step 4: Simplify right side
    27,128.76x = 768,336,413.28
  5. Step 5: Solve for x
    x = 768,336,413.28/27,128.76
  6. Step 6: Final answer
    x = 28,321.84

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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.