Home / 20,651.24-28,497.79-11,698.57

Finding the Fourth Proportional to 20,651.24, 28,497.79 and 11,698.57

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Solution

The fourth proportional to 20,651.24, 28,497.79 and 11,698.57 is: 16,143.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.24 : 28,497.79 = 11,698.57 : x
  2. Step 2: Convert to fraction form
    20,651.24/28,497.79 = 11,698.57/x
  3. Step 3: Cross multiply
    20,651.24x = 28,497.79 × 11,698.57
  4. Step 4: Simplify right side
    20,651.24x = 333,383,290.67
  5. Step 5: Solve for x
    x = 333,383,290.67/20,651.24
  6. Step 6: Final answer
    x = 16,143.50

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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.