Home / 21,163.38-29,206.44-12,089.55

Finding the Fourth Proportional to 21,163.38, 29,206.44 and 12,089.55

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Solution

The fourth proportional to 21,163.38, 29,206.44 and 12,089.55 is: 16,684.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.38 : 29,206.44 = 12,089.55 : x
  2. Step 2: Convert to fraction form
    21,163.38/29,206.44 = 12,089.55/x
  3. Step 3: Cross multiply
    21,163.38x = 29,206.44 × 12,089.55
  4. Step 4: Simplify right side
    21,163.38x = 353,092,716.70
  5. Step 5: Solve for x
    x = 353,092,716.70/21,163.38
  6. Step 6: Final answer
    x = 16,684.14

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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.