Home / 21,951.36-30,292.95-11,879.80

Finding the Fourth Proportional to 21,951.36, 30,292.95 and 11,879.80

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Solution

The fourth proportional to 21,951.36, 30,292.95 and 11,879.80 is: 16,394.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.36 : 30,292.95 = 11,879.80 : x
  2. Step 2: Convert to fraction form
    21,951.36/30,292.95 = 11,879.80/x
  3. Step 3: Cross multiply
    21,951.36x = 30,292.95 × 11,879.80
  4. Step 4: Simplify right side
    21,951.36x = 359,873,976.55
  5. Step 5: Solve for x
    x = 359,873,976.55/21,951.36
  6. Step 6: Final answer
    x = 16,394.16

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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.