Home / 21,984.66-30,338.78-11,913.37

Finding the Fourth Proportional to 21,984.66, 30,338.78 and 11,913.37

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Solution

The fourth proportional to 21,984.66, 30,338.78 and 11,913.37 is: 16,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984.66 : 30,338.78 = 11,913.37 : x
  2. Step 2: Convert to fraction form
    21,984.66/30,338.78 = 11,913.37/x
  3. Step 3: Cross multiply
    21,984.66x = 30,338.78 × 11,913.37
  4. Step 4: Simplify right side
    21,984.66x = 361,436,976.07
  5. Step 5: Solve for x
    x = 361,436,976.07/21,984.66
  6. Step 6: Final answer
    x = 16,440.42

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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.