Home / 20,469.66-28,249.56-11,518.02

Finding the Fourth Proportional to 20,469.66, 28,249.56 and 11,518.02

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Solution

The fourth proportional to 20,469.66, 28,249.56 and 11,518.02 is: 15,895.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.66 : 28,249.56 = 11,518.02 : x
  2. Step 2: Convert to fraction form
    20,469.66/28,249.56 = 11,518.02/x
  3. Step 3: Cross multiply
    20,469.66x = 28,249.56 × 11,518.02
  4. Step 4: Simplify right side
    20,469.66x = 325,378,997.07
  5. Step 5: Solve for x
    x = 325,378,997.07/20,469.66
  6. Step 6: Final answer
    x = 15,895.67

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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.