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Finding the Fourth Proportional to 21,692.64, 32,449.86 and 17,318.64

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Solution

The fourth proportional to 21,692.64, 32,449.86 and 17,318.64 is: 25,906.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,692.64 : 32,449.86 = 17,318.64 : x
  2. Step 2: Convert to fraction form
    21,692.64/32,449.86 = 17,318.64/x
  3. Step 3: Cross multiply
    21,692.64x = 32,449.86 × 17,318.64
  4. Step 4: Simplify right side
    21,692.64x = 561,987,443.39
  5. Step 5: Solve for x
    x = 561,987,443.39/21,692.64
  6. Step 6: Final answer
    x = 25,906.83

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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.