Home / 20,662.39-28,514.22-12,164.88

Finding the Fourth Proportional to 20,662.39, 28,514.22 and 12,164.88

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Solution

The fourth proportional to 20,662.39, 28,514.22 and 12,164.88 is: 16,787.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.39 : 28,514.22 = 12,164.88 : x
  2. Step 2: Convert to fraction form
    20,662.39/28,514.22 = 12,164.88/x
  3. Step 3: Cross multiply
    20,662.39x = 28,514.22 × 12,164.88
  4. Step 4: Simplify right side
    20,662.39x = 346,872,064.59
  5. Step 5: Solve for x
    x = 346,872,064.59/20,662.39
  6. Step 6: Final answer
    x = 16,787.61

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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.