Home / 20,924.88-28,869.21-11,965.98

Finding the Fourth Proportional to 20,924.88, 28,869.21 and 11,965.98

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Solution

The fourth proportional to 20,924.88, 28,869.21 and 11,965.98 is: 16,508.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.88 : 28,869.21 = 11,965.98 : x
  2. Step 2: Convert to fraction form
    20,924.88/28,869.21 = 11,965.98/x
  3. Step 3: Cross multiply
    20,924.88x = 28,869.21 × 11,965.98
  4. Step 4: Simplify right side
    20,924.88x = 345,448,335.35
  5. Step 5: Solve for x
    x = 345,448,335.35/20,924.88
  6. Step 6: Final answer
    x = 16,508.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.