Home / 20,101.57-27,738.34-11,149.04

Finding the Fourth Proportional to 20,101.57, 27,738.34 and 11,149.04

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Solution

The fourth proportional to 20,101.57, 27,738.34 and 11,149.04 is: 15,384.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.57 : 27,738.34 = 11,149.04 : x
  2. Step 2: Convert to fraction form
    20,101.57/27,738.34 = 11,149.04/x
  3. Step 3: Cross multiply
    20,101.57x = 27,738.34 × 11,149.04
  4. Step 4: Simplify right side
    20,101.57x = 309,255,945.48
  5. Step 5: Solve for x
    x = 309,255,945.48/20,101.57
  6. Step 6: Final answer
    x = 15,384.67

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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.