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Finding the Fourth Proportional to 13,661.73, 20,490.80 and 4,301.80

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Solution

The fourth proportional to 13,661.73, 20,490.80 and 4,301.80 is: 6,452.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.73 : 20,490.80 = 4,301.80 : x
  2. Step 2: Convert to fraction form
    13,661.73/20,490.80 = 4,301.80/x
  3. Step 3: Cross multiply
    13,661.73x = 20,490.80 × 4,301.80
  4. Step 4: Simplify right side
    13,661.73x = 88,147,323.44
  5. Step 5: Solve for x
    x = 88,147,323.44/13,661.73
  6. Step 6: Final answer
    x = 6,452.13

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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.