Home / 21,163.55-29,199.78-16,673.38

Finding the Fourth Proportional to 21,163.55, 29,199.78 and 16,673.38

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Solution

The fourth proportional to 21,163.55, 29,199.78 and 16,673.38 is: 23,004.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.55 : 29,199.78 = 16,673.38 : x
  2. Step 2: Convert to fraction form
    21,163.55/29,199.78 = 16,673.38/x
  3. Step 3: Cross multiply
    21,163.55x = 29,199.78 × 16,673.38
  4. Step 4: Simplify right side
    21,163.55x = 486,858,954.86
  5. Step 5: Solve for x
    x = 486,858,954.86/21,163.55
  6. Step 6: Final answer
    x = 23,004.60

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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.