Home / 21,977.20-32,956.92-13,644.88

Finding the Fourth Proportional to 21,977.20, 32,956.92 and 13,644.88

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Solution

The fourth proportional to 21,977.20, 32,956.92 and 13,644.88 is: 20,461.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.20 : 32,956.92 = 13,644.88 : x
  2. Step 2: Convert to fraction form
    21,977.20/32,956.92 = 13,644.88/x
  3. Step 3: Cross multiply
    21,977.20x = 32,956.92 × 13,644.88
  4. Step 4: Simplify right side
    21,977.20x = 449,693,218.57
  5. Step 5: Solve for x
    x = 449,693,218.57/21,977.20
  6. Step 6: Final answer
    x = 20,461.81

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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.