Home / 21,951.29-30,292.72-11,879.75

Finding the Fourth Proportional to 21,951.29, 30,292.72 and 11,879.75

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Solution

The fourth proportional to 21,951.29, 30,292.72 and 11,879.75 is: 16,394.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.29 : 30,292.72 = 11,879.75 : x
  2. Step 2: Convert to fraction form
    21,951.29/30,292.72 = 11,879.75/x
  3. Step 3: Cross multiply
    21,951.29x = 30,292.72 × 11,879.75
  4. Step 4: Simplify right side
    21,951.29x = 359,869,759.26
  5. Step 5: Solve for x
    x = 359,869,759.26/21,951.29
  6. Step 6: Final answer
    x = 16,394.02

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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.