Home / 21,191.63-29,245.35-11,760.19

Finding the Fourth Proportional to 21,191.63, 29,245.35 and 11,760.19

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Solution

The fourth proportional to 21,191.63, 29,245.35 and 11,760.19 is: 16,229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.63 : 29,245.35 = 11,760.19 : x
  2. Step 2: Convert to fraction form
    21,191.63/29,245.35 = 11,760.19/x
  3. Step 3: Cross multiply
    21,191.63x = 29,245.35 × 11,760.19
  4. Step 4: Simplify right side
    21,191.63x = 343,930,843.60
  5. Step 5: Solve for x
    x = 343,930,843.60/21,191.63
  6. Step 6: Final answer
    x = 16,229.56

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Double scale
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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.