Home / 21,231.22-29,311.88-14,067.20

Finding the Fourth Proportional to 21,231.22, 29,311.88 and 14,067.20

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Solution

The fourth proportional to 21,231.22, 29,311.88 and 14,067.20 is: 19,421.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.22 : 29,311.88 = 14,067.20 : x
  2. Step 2: Convert to fraction form
    21,231.22/29,311.88 = 14,067.20/x
  3. Step 3: Cross multiply
    21,231.22x = 29,311.88 × 14,067.20
  4. Step 4: Simplify right side
    21,231.22x = 412,336,078.34
  5. Step 5: Solve for x
    x = 412,336,078.34/21,231.22
  6. Step 6: Final answer
    x = 19,421.21

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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.