Home / 21,984.24-30,338.24-11,912.76

Finding the Fourth Proportional to 21,984.24, 30,338.24 and 11,912.76

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Solution

The fourth proportional to 21,984.24, 30,338.24 and 11,912.76 is: 16,439.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984.24 : 30,338.24 = 11,912.76 : x
  2. Step 2: Convert to fraction form
    21,984.24/30,338.24 = 11,912.76/x
  3. Step 3: Cross multiply
    21,984.24x = 30,338.24 × 11,912.76
  4. Step 4: Simplify right side
    21,984.24x = 361,412,171.94
  5. Step 5: Solve for x
    x = 361,412,171.94/21,984.24
  6. Step 6: Final answer
    x = 16,439.60

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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.