Home / 21,409.81-29,544.92-11,850.09

Finding the Fourth Proportional to 21,409.81, 29,544.92 and 11,850.09

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Solution

The fourth proportional to 21,409.81, 29,544.92 and 11,850.09 is: 16,352.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.81 : 29,544.92 = 11,850.09 : x
  2. Step 2: Convert to fraction form
    21,409.81/29,544.92 = 11,850.09/x
  3. Step 3: Cross multiply
    21,409.81x = 29,544.92 × 11,850.09
  4. Step 4: Simplify right side
    21,409.81x = 350,109,961.04
  5. Step 5: Solve for x
    x = 350,109,961.04/21,409.81
  6. Step 6: Final answer
    x = 16,352.78

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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.