Home / 20,481.93-28,265.59-11,529.75

Finding the Fourth Proportional to 20,481.93, 28,265.59 and 11,529.75

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Solution

The fourth proportional to 20,481.93, 28,265.59 and 11,529.75 is: 15,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.93 : 28,265.59 = 11,529.75 : x
  2. Step 2: Convert to fraction form
    20,481.93/28,265.59 = 11,529.75/x
  3. Step 3: Cross multiply
    20,481.93x = 28,265.59 × 11,529.75
  4. Step 4: Simplify right side
    20,481.93x = 325,895,128.65
  5. Step 5: Solve for x
    x = 325,895,128.65/20,481.93
  6. Step 6: Final answer
    x = 15,911.35

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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.