Home / 21,682.88-32,490.40-16,764.64

Finding the Fourth Proportional to 21,682.88, 32,490.40 and 16,764.64

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Solution

The fourth proportional to 21,682.88, 32,490.40 and 16,764.64 is: 25,120.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,682.88 : 32,490.40 = 16,764.64 : x
  2. Step 2: Convert to fraction form
    21,682.88/32,490.40 = 16,764.64/x
  3. Step 3: Cross multiply
    21,682.88x = 32,490.40 × 16,764.64
  4. Step 4: Simplify right side
    21,682.88x = 544,689,859.46
  5. Step 5: Solve for x
    x = 544,689,859.46/21,682.88
  6. Step 6: Final answer
    x = 25,120.73

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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.