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Finding the Fourth Proportional to 18,801.82, 28,204.10 and 6,321.80

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Solution

The fourth proportional to 18,801.82, 28,204.10 and 6,321.80 is: 9,483.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.82 : 28,204.10 = 6,321.80 : x
  2. Step 2: Convert to fraction form
    18,801.82/28,204.10 = 6,321.80/x
  3. Step 3: Cross multiply
    18,801.82x = 28,204.10 × 6,321.80
  4. Step 4: Simplify right side
    18,801.82x = 178,300,583.34
  5. Step 5: Solve for x
    x = 178,300,583.34/18,801.82
  6. Step 6: Final answer
    x = 9,483.15

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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.