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Finding the Fourth Proportional to 21,775.28, 32,662.84 and 17,401.28

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Solution

The fourth proportional to 21,775.28, 32,662.84 and 17,401.28 is: 26,101.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.28 : 32,662.84 = 17,401.28 : x
  2. Step 2: Convert to fraction form
    21,775.28/32,662.84 = 17,401.28/x
  3. Step 3: Cross multiply
    21,775.28x = 32,662.84 × 17,401.28
  4. Step 4: Simplify right side
    21,775.28x = 568,375,224.44
  5. Step 5: Solve for x
    x = 568,375,224.44/21,775.28
  6. Step 6: Final answer
    x = 26,101.86

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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.