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Finding the Fourth Proportional to 13,884.40, 20,801.40 and 8,023.60

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Solution

The fourth proportional to 13,884.40, 20,801.40 and 8,023.60 is: 12,020.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,884.40 : 20,801.40 = 8,023.60 : x
  2. Step 2: Convert to fraction form
    13,884.40/20,801.40 = 8,023.60/x
  3. Step 3: Cross multiply
    13,884.40x = 20,801.40 × 8,023.60
  4. Step 4: Simplify right side
    13,884.40x = 166,902,113.04
  5. Step 5: Solve for x
    x = 166,902,113.04/13,884.40
  6. Step 6: Final answer
    x = 12,020.84

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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.