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Finding the Fourth Proportional to 20,636.76, 30,960.36 and 5,845.80

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Solution

The fourth proportional to 20,636.76, 30,960.36 and 5,845.80 is: 8,770.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.76 : 30,960.36 = 5,845.80 : x
  2. Step 2: Convert to fraction form
    20,636.76/30,960.36 = 5,845.80/x
  3. Step 3: Cross multiply
    20,636.76x = 30,960.36 × 5,845.80
  4. Step 4: Simplify right side
    20,636.76x = 180,988,072.49
  5. Step 5: Solve for x
    x = 180,988,072.49/20,636.76
  6. Step 6: Final answer
    x = 8,770.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.