Home / 21,829.14-30,121.79-12,266.82

Finding the Fourth Proportional to 21,829.14, 30,121.79 and 12,266.82

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Solution

The fourth proportional to 21,829.14, 30,121.79 and 12,266.82 is: 16,926.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.14 : 30,121.79 = 12,266.82 : x
  2. Step 2: Convert to fraction form
    21,829.14/30,121.79 = 12,266.82/x
  3. Step 3: Cross multiply
    21,829.14x = 30,121.79 × 12,266.82
  4. Step 4: Simplify right side
    21,829.14x = 369,498,514.67
  5. Step 5: Solve for x
    x = 369,498,514.67/21,829.14
  6. Step 6: Final answer
    x = 16,926.85

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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.