Home / 21,725.13-29,973.69-12,163.61

Finding the Fourth Proportional to 21,725.13, 29,973.69 and 12,163.61

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Solution

The fourth proportional to 21,725.13, 29,973.69 and 12,163.61 is: 16,781.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,725.13 : 29,973.69 = 12,163.61 : x
  2. Step 2: Convert to fraction form
    21,725.13/29,973.69 = 12,163.61/x
  3. Step 3: Cross multiply
    21,725.13x = 29,973.69 × 12,163.61
  4. Step 4: Simplify right side
    21,725.13x = 364,588,275.42
  5. Step 5: Solve for x
    x = 364,588,275.42/21,725.13
  6. Step 6: Final answer
    x = 16,781.87

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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.