Home / 20,469.56-28,247.66-11,517.05

Finding the Fourth Proportional to 20,469.56, 28,247.66 and 11,517.05

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Solution

The fourth proportional to 20,469.56, 28,247.66 and 11,517.05 is: 15,893.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.56 : 28,247.66 = 11,517.05 : x
  2. Step 2: Convert to fraction form
    20,469.56/28,247.66 = 11,517.05/x
  3. Step 3: Cross multiply
    20,469.56x = 28,247.66 × 11,517.05
  4. Step 4: Simplify right side
    20,469.56x = 325,329,768.83
  5. Step 5: Solve for x
    x = 325,329,768.83/20,469.56
  6. Step 6: Final answer
    x = 15,893.35

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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.