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Finding the Fourth Proportional to 21,595, 29,793.84 and 17,609.20

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Solution

The fourth proportional to 21,595, 29,793.84 and 17,609.20 is: 24,294.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,595 : 29,793.84 = 17,609.20 : x
  2. Step 2: Convert to fraction form
    21,595/29,793.84 = 17,609.20/x
  3. Step 3: Cross multiply
    21,595x = 29,793.84 × 17,609.20
  4. Step 4: Simplify right side
    21,595x = 524,645,687.33
  5. Step 5: Solve for x
    x = 524,645,687.33/21,595
  6. Step 6: Final answer
    x = 24,294.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.