Home / 20,629.72-28,458.66-13,906.84

Finding the Fourth Proportional to 20,629.72, 28,458.66 and 13,906.84

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Solution

The fourth proportional to 20,629.72, 28,458.66 and 13,906.84 is: 19,184.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.72 : 28,458.66 = 13,906.84 : x
  2. Step 2: Convert to fraction form
    20,629.72/28,458.66 = 13,906.84/x
  3. Step 3: Cross multiply
    20,629.72x = 28,458.66 × 13,906.84
  4. Step 4: Simplify right side
    20,629.72x = 395,770,031.23
  5. Step 5: Solve for x
    x = 395,770,031.23/20,629.72
  6. Step 6: Final answer
    x = 19,184.46

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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.