Home / 20,467.12-28,245-11,516.80

Finding the Fourth Proportional to 20,467.12, 28,245 and 11,516.80

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Solution

The fourth proportional to 20,467.12, 28,245 and 11,516.80 is: 15,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.12 : 28,245 = 11,516.80 : x
  2. Step 2: Convert to fraction form
    20,467.12/28,245 = 11,516.80/x
  3. Step 3: Cross multiply
    20,467.12x = 28,245 × 11,516.80
  4. Step 4: Simplify right side
    20,467.12x = 325,292,016
  5. Step 5: Solve for x
    x = 325,292,016/20,467.12
  6. Step 6: Final answer
    x = 15,893.39

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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.