Home / 20,770.68-28,622.34-14,791.80

Finding the Fourth Proportional to 20,770.68, 28,622.34 and 14,791.80

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Solution

The fourth proportional to 20,770.68, 28,622.34 and 14,791.80 is: 20,383.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.68 : 28,622.34 = 14,791.80 : x
  2. Step 2: Convert to fraction form
    20,770.68/28,622.34 = 14,791.80/x
  3. Step 3: Cross multiply
    20,770.68x = 28,622.34 × 14,791.80
  4. Step 4: Simplify right side
    20,770.68x = 423,375,928.81
  5. Step 5: Solve for x
    x = 423,375,928.81/20,770.68
  6. Step 6: Final answer
    x = 20,383.34

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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.