Home / 20,964.05-28,929.94-12,016.83

Finding the Fourth Proportional to 20,964.05, 28,929.94 and 12,016.83

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Solution

The fourth proportional to 20,964.05, 28,929.94 and 12,016.83 is: 16,582.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.05 : 28,929.94 = 12,016.83 : x
  2. Step 2: Convert to fraction form
    20,964.05/28,929.94 = 12,016.83/x
  3. Step 3: Cross multiply
    20,964.05x = 28,929.94 × 12,016.83
  4. Step 4: Simplify right side
    20,964.05x = 347,646,170.89
  5. Step 5: Solve for x
    x = 347,646,170.89/20,964.05
  6. Step 6: Final answer
    x = 16,582.97

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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.