Home / 20,244.39-30,520.75-18,817.38

Finding the Fourth Proportional to 20,244.39, 30,520.75 and 18,817.38

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Solution

The fourth proportional to 20,244.39, 30,520.75 and 18,817.38 is: 28,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,244.39 : 30,520.75 = 18,817.38 : x
  2. Step 2: Convert to fraction form
    20,244.39/30,520.75 = 18,817.38/x
  3. Step 3: Cross multiply
    20,244.39x = 30,520.75 × 18,817.38
  4. Step 4: Simplify right side
    20,244.39x = 574,320,550.64
  5. Step 5: Solve for x
    x = 574,320,550.64/20,244.39
  6. Step 6: Final answer
    x = 28,369.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.