Home / 20,188.35-27,859.68-11,804.85

Finding the Fourth Proportional to 20,188.35, 27,859.68 and 11,804.85

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Solution

The fourth proportional to 20,188.35, 27,859.68 and 11,804.85 is: 16,290.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.35 : 27,859.68 = 11,804.85 : x
  2. Step 2: Convert to fraction form
    20,188.35/27,859.68 = 11,804.85/x
  3. Step 3: Cross multiply
    20,188.35x = 27,859.68 × 11,804.85
  4. Step 4: Simplify right side
    20,188.35x = 328,879,343.45
  5. Step 5: Solve for x
    x = 328,879,343.45/20,188.35
  6. Step 6: Final answer
    x = 16,290.55

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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.