Home / 20,634.42-30,921.29-12,192.25

Finding the Fourth Proportional to 20,634.42, 30,921.29 and 12,192.25

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Solution

The fourth proportional to 20,634.42, 30,921.29 and 12,192.25 is: 18,270.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.42 : 30,921.29 = 12,192.25 : x
  2. Step 2: Convert to fraction form
    20,634.42/30,921.29 = 12,192.25/x
  3. Step 3: Cross multiply
    20,634.42x = 30,921.29 × 12,192.25
  4. Step 4: Simplify right side
    20,634.42x = 377,000,045.05
  5. Step 5: Solve for x
    x = 377,000,045.05/20,634.42
  6. Step 6: Final answer
    x = 18,270.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.