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Finding the Fourth Proportional to 21,644.62, 32,494.97 and 20,756.25

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Solution

The fourth proportional to 21,644.62, 32,494.97 and 20,756.25 is: 31,161.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.62 : 32,494.97 = 20,756.25 : x
  2. Step 2: Convert to fraction form
    21,644.62/32,494.97 = 20,756.25/x
  3. Step 3: Cross multiply
    21,644.62x = 32,494.97 × 20,756.25
  4. Step 4: Simplify right side
    21,644.62x = 674,473,772.95
  5. Step 5: Solve for x
    x = 674,473,772.95/21,644.62
  6. Step 6: Final answer
    x = 31,161.27

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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.