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Finding the Fourth Proportional to 17,040.80, 25,537.20 and 13,536.80

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Solution

The fourth proportional to 17,040.80, 25,537.20 and 13,536.80 is: 20,286.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,040.80 : 25,537.20 = 13,536.80 : x
  2. Step 2: Convert to fraction form
    17,040.80/25,537.20 = 13,536.80/x
  3. Step 3: Cross multiply
    17,040.80x = 25,537.20 × 13,536.80
  4. Step 4: Simplify right side
    17,040.80x = 345,691,968.96
  5. Step 5: Solve for x
    x = 345,691,968.96/17,040.80
  6. Step 6: Final answer
    x = 20,286.13

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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.