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Finding the Fourth Proportional to 21,604.88, 32,351.16 and 18,504.80

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Solution

The fourth proportional to 21,604.88, 32,351.16 and 18,504.80 is: 27,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,604.88 : 32,351.16 = 18,504.80 : x
  2. Step 2: Convert to fraction form
    21,604.88/32,351.16 = 18,504.80/x
  3. Step 3: Cross multiply
    21,604.88x = 32,351.16 × 18,504.80
  4. Step 4: Simplify right side
    21,604.88x = 598,651,745.57
  5. Step 5: Solve for x
    x = 598,651,745.57/21,604.88
  6. Step 6: Final answer
    x = 27,709.10

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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.