Home / 21,092.12-29,107.76-11,661.28

Finding the Fourth Proportional to 21,092.12, 29,107.76 and 11,661.28

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Solution

The fourth proportional to 21,092.12, 29,107.76 and 11,661.28 is: 16,092.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,092.12 : 29,107.76 = 11,661.28 : x
  2. Step 2: Convert to fraction form
    21,092.12/29,107.76 = 11,661.28/x
  3. Step 3: Cross multiply
    21,092.12x = 29,107.76 × 11,661.28
  4. Step 4: Simplify right side
    21,092.12x = 339,433,739.53
  5. Step 5: Solve for x
    x = 339,433,739.53/21,092.12
  6. Step 6: Final answer
    x = 16,092.92

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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.