Home / 20,100.15-27,734.13-11,145.60

Finding the Fourth Proportional to 20,100.15, 27,734.13 and 11,145.60

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Solution

The fourth proportional to 20,100.15, 27,734.13 and 11,145.60 is: 15,378.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.15 : 27,734.13 = 11,145.60 : x
  2. Step 2: Convert to fraction form
    20,100.15/27,734.13 = 11,145.60/x
  3. Step 3: Cross multiply
    20,100.15x = 27,734.13 × 11,145.60
  4. Step 4: Simplify right side
    20,100.15x = 309,113,519.33
  5. Step 5: Solve for x
    x = 309,113,519.33/20,100.15
  6. Step 6: Final answer
    x = 15,378.67

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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.