Home / 20,195.40-27,868.57-11,242.67

Finding the Fourth Proportional to 20,195.40, 27,868.57 and 11,242.67

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Solution

The fourth proportional to 20,195.40, 27,868.57 and 11,242.67 is: 15,514.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.40 : 27,868.57 = 11,242.67 : x
  2. Step 2: Convert to fraction form
    20,195.40/27,868.57 = 11,242.67/x
  3. Step 3: Cross multiply
    20,195.40x = 27,868.57 × 11,242.67
  4. Step 4: Simplify right side
    20,195.40x = 313,317,135.88
  5. Step 5: Solve for x
    x = 313,317,135.88/20,195.40
  6. Step 6: Final answer
    x = 15,514.28

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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.