Home / 20,738.43-28,619.73-11,307.60

Finding the Fourth Proportional to 20,738.43, 28,619.73 and 11,307.60

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Solution

The fourth proportional to 20,738.43, 28,619.73 and 11,307.60 is: 15,604.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.43 : 28,619.73 = 11,307.60 : x
  2. Step 2: Convert to fraction form
    20,738.43/28,619.73 = 11,307.60/x
  3. Step 3: Cross multiply
    20,738.43x = 28,619.73 × 11,307.60
  4. Step 4: Simplify right side
    20,738.43x = 323,620,458.95
  5. Step 5: Solve for x
    x = 323,620,458.95/20,738.43
  6. Step 6: Final answer
    x = 15,604.87

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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.