Home / 21,153.39-29,193.73-11,721.95

Finding the Fourth Proportional to 21,153.39, 29,193.73 and 11,721.95

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Solution

The fourth proportional to 21,153.39, 29,193.73 and 11,721.95 is: 16,177.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.39 : 29,193.73 = 11,721.95 : x
  2. Step 2: Convert to fraction form
    21,153.39/29,193.73 = 11,721.95/x
  3. Step 3: Cross multiply
    21,153.39x = 29,193.73 × 11,721.95
  4. Step 4: Simplify right side
    21,153.39x = 342,207,443.37
  5. Step 5: Solve for x
    x = 342,207,443.37/21,153.39
  6. Step 6: Final answer
    x = 16,177.43

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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.