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Finding the Fourth Proportional to 20,532.80, 30,801.72 and 8,843.60

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Solution

The fourth proportional to 20,532.80, 30,801.72 and 8,843.60 is: 13,266.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.80 : 30,801.72 = 8,843.60 : x
  2. Step 2: Convert to fraction form
    20,532.80/30,801.72 = 8,843.60/x
  3. Step 3: Cross multiply
    20,532.80x = 30,801.72 × 8,843.60
  4. Step 4: Simplify right side
    20,532.80x = 272,398,090.99
  5. Step 5: Solve for x
    x = 272,398,090.99/20,532.80
  6. Step 6: Final answer
    x = 13,266.49

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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.