Home / 21,455.38-29,608.49-11,896.83

Finding the Fourth Proportional to 21,455.38, 29,608.49 and 11,896.83

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Solution

The fourth proportional to 21,455.38, 29,608.49 and 11,896.83 is: 16,417.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.38 : 29,608.49 = 11,896.83 : x
  2. Step 2: Convert to fraction form
    21,455.38/29,608.49 = 11,896.83/x
  3. Step 3: Cross multiply
    21,455.38x = 29,608.49 × 11,896.83
  4. Step 4: Simplify right side
    21,455.38x = 352,247,172.09
  5. Step 5: Solve for x
    x = 352,247,172.09/21,455.38
  6. Step 6: Final answer
    x = 16,417.66

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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.