Home / 21,391.08-29,519.80-11,959.44

Finding the Fourth Proportional to 21,391.08, 29,519.80 and 11,959.44

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Solution

The fourth proportional to 21,391.08, 29,519.80 and 11,959.44 is: 16,504.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,391.08 : 29,519.80 = 11,959.44 : x
  2. Step 2: Convert to fraction form
    21,391.08/29,519.80 = 11,959.44/x
  3. Step 3: Cross multiply
    21,391.08x = 29,519.80 × 11,959.44
  4. Step 4: Simplify right side
    21,391.08x = 353,040,276.91
  5. Step 5: Solve for x
    x = 353,040,276.91/21,391.08
  6. Step 6: Final answer
    x = 16,504.09

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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.