Home / 21,906.36-30,230.78-11,834.80

Finding the Fourth Proportional to 21,906.36, 30,230.78 and 11,834.80

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Solution

The fourth proportional to 21,906.36, 30,230.78 and 11,834.80 is: 16,332.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906.36 : 30,230.78 = 11,834.80 : x
  2. Step 2: Convert to fraction form
    21,906.36/30,230.78 = 11,834.80/x
  3. Step 3: Cross multiply
    21,906.36x = 30,230.78 × 11,834.80
  4. Step 4: Simplify right side
    21,906.36x = 357,775,235.14
  5. Step 5: Solve for x
    x = 357,775,235.14/21,906.36
  6. Step 6: Final answer
    x = 16,332.03

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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.