Home / 20,119.45-27,763.53-11,166.95

Finding the Fourth Proportional to 20,119.45, 27,763.53 and 11,166.95

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Solution

The fourth proportional to 20,119.45, 27,763.53 and 11,166.95 is: 15,409.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.45 : 27,763.53 = 11,166.95 : x
  2. Step 2: Convert to fraction form
    20,119.45/27,763.53 = 11,166.95/x
  3. Step 3: Cross multiply
    20,119.45x = 27,763.53 × 11,166.95
  4. Step 4: Simplify right side
    20,119.45x = 310,033,951.33
  5. Step 5: Solve for x
    x = 310,033,951.33/20,119.45
  6. Step 6: Final answer
    x = 15,409.67

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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.