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Finding the Fourth Proportional to 20,443.60, 30,600.60 and 14,611.60

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Solution

The fourth proportional to 20,443.60, 30,600.60 and 14,611.60 is: 21,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.60 : 30,600.60 = 14,611.60 : x
  2. Step 2: Convert to fraction form
    20,443.60/30,600.60 = 14,611.60/x
  3. Step 3: Cross multiply
    20,443.60x = 30,600.60 × 14,611.60
  4. Step 4: Simplify right side
    20,443.60x = 447,123,726.96
  5. Step 5: Solve for x
    x = 447,123,726.96/20,443.60
  6. Step 6: Final answer
    x = 21,871.09

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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.