Home / 21,756.83-30,033.92-13,811.27

Finding the Fourth Proportional to 21,756.83, 30,033.92 and 13,811.27

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Solution

The fourth proportional to 21,756.83, 30,033.92 and 13,811.27 is: 19,065.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.83 : 30,033.92 = 13,811.27 : x
  2. Step 2: Convert to fraction form
    21,756.83/30,033.92 = 13,811.27/x
  3. Step 3: Cross multiply
    21,756.83x = 30,033.92 × 13,811.27
  4. Step 4: Simplify right side
    21,756.83x = 414,806,584.31
  5. Step 5: Solve for x
    x = 414,806,584.31/21,756.83
  6. Step 6: Final answer
    x = 19,065.58

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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.