Home / 21,170.29-29,215.41-11,609.61

Finding the Fourth Proportional to 21,170.29, 29,215.41 and 11,609.61

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Solution

The fourth proportional to 21,170.29, 29,215.41 and 11,609.61 is: 16,021.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.29 : 29,215.41 = 11,609.61 : x
  2. Step 2: Convert to fraction form
    21,170.29/29,215.41 = 11,609.61/x
  3. Step 3: Cross multiply
    21,170.29x = 29,215.41 × 11,609.61
  4. Step 4: Simplify right side
    21,170.29x = 339,179,458.04
  5. Step 5: Solve for x
    x = 339,179,458.04/21,170.29
  6. Step 6: Final answer
    x = 16,021.48

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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.