Home / 21,951.02-30,292.42-11,879.42

Finding the Fourth Proportional to 21,951.02, 30,292.42 and 11,879.42

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Solution

The fourth proportional to 21,951.02, 30,292.42 and 11,879.42 is: 16,393.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.02 : 30,292.42 = 11,879.42 : x
  2. Step 2: Convert to fraction form
    21,951.02/30,292.42 = 11,879.42/x
  3. Step 3: Cross multiply
    21,951.02x = 30,292.42 × 11,879.42
  4. Step 4: Simplify right side
    21,951.02x = 359,856,198.84
  5. Step 5: Solve for x
    x = 359,856,198.84/21,951.02
  6. Step 6: Final answer
    x = 16,393.60

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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.