Home / 21,951.34-30,292.61-11,879.55

Finding the Fourth Proportional to 21,951.34, 30,292.61 and 11,879.55

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Solution

The fourth proportional to 21,951.34, 30,292.61 and 11,879.55 is: 16,393.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.34 : 30,292.61 = 11,879.55 : x
  2. Step 2: Convert to fraction form
    21,951.34/30,292.61 = 11,879.55/x
  3. Step 3: Cross multiply
    21,951.34x = 30,292.61 × 11,879.55
  4. Step 4: Simplify right side
    21,951.34x = 359,862,515.73
  5. Step 5: Solve for x
    x = 359,862,515.73/21,951.34
  6. Step 6: Final answer
    x = 16,393.65

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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.