Home / 21,940.38-30,277.73-11,868.82

Finding the Fourth Proportional to 21,940.38, 30,277.73 and 11,868.82

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Solution

The fourth proportional to 21,940.38, 30,277.73 and 11,868.82 is: 16,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,940.38 : 30,277.73 = 11,868.82 : x
  2. Step 2: Convert to fraction form
    21,940.38/30,277.73 = 11,868.82/x
  3. Step 3: Cross multiply
    21,940.38x = 30,277.73 × 11,868.82
  4. Step 4: Simplify right side
    21,940.38x = 359,360,881.36
  5. Step 5: Solve for x
    x = 359,360,881.36/21,940.38
  6. Step 6: Final answer
    x = 16,378.97

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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.