Home / 12,069.42-18,021.56-10,811.90

Finding the Fourth Proportional to 12,069.42, 18,021.56 and 10,811.90

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Solution

The fourth proportional to 12,069.42, 18,021.56 and 10,811.90 is: 16,143.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,069.42 : 18,021.56 = 10,811.90 : x
  2. Step 2: Convert to fraction form
    12,069.42/18,021.56 = 10,811.90/x
  3. Step 3: Cross multiply
    12,069.42x = 18,021.56 × 10,811.90
  4. Step 4: Simplify right side
    12,069.42x = 194,847,241.49
  5. Step 5: Solve for x
    x = 194,847,241.49/12,069.42
  6. Step 6: Final answer
    x = 16,143.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.