Home / 21,163.97-29,207.22-12,090.12

Finding the Fourth Proportional to 21,163.97, 29,207.22 and 12,090.12

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Solution

The fourth proportional to 21,163.97, 29,207.22 and 12,090.12 is: 16,684.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.97 : 29,207.22 = 12,090.12 : x
  2. Step 2: Convert to fraction form
    21,163.97/29,207.22 = 12,090.12/x
  3. Step 3: Cross multiply
    21,163.97x = 29,207.22 × 12,090.12
  4. Step 4: Simplify right side
    21,163.97x = 353,118,794.67
  5. Step 5: Solve for x
    x = 353,118,794.67/21,163.97
  6. Step 6: Final answer
    x = 16,684.91

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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.