Home / 22,561.68-31,143.84-20,199.72

Finding the Fourth Proportional to 22,561.68, 31,143.84 and 20,199.72

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Solution

The fourth proportional to 22,561.68, 31,143.84 and 20,199.72 is: 27,883.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,561.68 : 31,143.84 = 20,199.72 : x
  2. Step 2: Convert to fraction form
    22,561.68/31,143.84 = 20,199.72/x
  3. Step 3: Cross multiply
    22,561.68x = 31,143.84 × 20,199.72
  4. Step 4: Simplify right side
    22,561.68x = 629,096,847.72
  5. Step 5: Solve for x
    x = 629,096,847.72/22,561.68
  6. Step 6: Final answer
    x = 27,883.42

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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.