Home / 15,119.82-20,850.36-11,756.70

Finding the Fourth Proportional to 15,119.82, 20,850.36 and 11,756.70

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Solution

The fourth proportional to 15,119.82, 20,850.36 and 11,756.70 is: 16,212.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,119.82 : 20,850.36 = 11,756.70 : x
  2. Step 2: Convert to fraction form
    15,119.82/20,850.36 = 11,756.70/x
  3. Step 3: Cross multiply
    15,119.82x = 20,850.36 × 11,756.70
  4. Step 4: Simplify right side
    15,119.82x = 245,131,427.41
  5. Step 5: Solve for x
    x = 245,131,427.41/15,119.82
  6. Step 6: Final answer
    x = 16,212.59

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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.