Home / 20,119.81-27,768.66-11,170.18

Finding the Fourth Proportional to 20,119.81, 27,768.66 and 11,170.18

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Solution

The fourth proportional to 20,119.81, 27,768.66 and 11,170.18 is: 15,416.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.81 : 27,768.66 = 11,170.18 : x
  2. Step 2: Convert to fraction form
    20,119.81/27,768.66 = 11,170.18/x
  3. Step 3: Cross multiply
    20,119.81x = 27,768.66 × 11,170.18
  4. Step 4: Simplify right side
    20,119.81x = 310,180,930.56
  5. Step 5: Solve for x
    x = 310,180,930.56/20,119.81
  6. Step 6: Final answer
    x = 15,416.69

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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.