Home / 21,235.26-31,673.71-18,439.95

Finding the Fourth Proportional to 21,235.26, 31,673.71 and 18,439.95

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Solution

The fourth proportional to 21,235.26, 31,673.71 and 18,439.95 is: 27,504.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.26 : 31,673.71 = 18,439.95 : x
  2. Step 2: Convert to fraction form
    21,235.26/31,673.71 = 18,439.95/x
  3. Step 3: Cross multiply
    21,235.26x = 31,673.71 × 18,439.95
  4. Step 4: Simplify right side
    21,235.26x = 584,061,516.45
  5. Step 5: Solve for x
    x = 584,061,516.45/21,235.26
  6. Step 6: Final answer
    x = 27,504.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.