Home / 21,198.07-29,254.67-11,766.79

Finding the Fourth Proportional to 21,198.07, 29,254.67 and 11,766.79

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Solution

The fourth proportional to 21,198.07, 29,254.67 and 11,766.79 is: 16,238.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.07 : 29,254.67 = 11,766.79 : x
  2. Step 2: Convert to fraction form
    21,198.07/29,254.67 = 11,766.79/x
  3. Step 3: Cross multiply
    21,198.07x = 29,254.67 × 11,766.79
  4. Step 4: Simplify right side
    21,198.07x = 344,233,499.58
  5. Step 5: Solve for x
    x = 344,233,499.58/21,198.07
  6. Step 6: Final answer
    x = 16,238.91

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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.