Home / 15,684.68-21,613.60-11,195.80

Finding the Fourth Proportional to 15,684.68, 21,613.60 and 11,195.80

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Solution

The fourth proportional to 15,684.68, 21,613.60 and 11,195.80 is: 15,427.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,684.68 : 21,613.60 = 11,195.80 : x
  2. Step 2: Convert to fraction form
    15,684.68/21,613.60 = 11,195.80/x
  3. Step 3: Cross multiply
    15,684.68x = 21,613.60 × 11,195.80
  4. Step 4: Simplify right side
    15,684.68x = 241,981,542.88
  5. Step 5: Solve for x
    x = 241,981,542.88/15,684.68
  6. Step 6: Final answer
    x = 15,427.89

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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.