Home / 20,434.50-28,199.61-11,942.46

Finding the Fourth Proportional to 20,434.50, 28,199.61 and 11,942.46

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Solution

The fourth proportional to 20,434.50, 28,199.61 and 11,942.46 is: 16,480.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.50 : 28,199.61 = 11,942.46 : x
  2. Step 2: Convert to fraction form
    20,434.50/28,199.61 = 11,942.46/x
  3. Step 3: Cross multiply
    20,434.50x = 28,199.61 × 11,942.46
  4. Step 4: Simplify right side
    20,434.50x = 336,772,714.44
  5. Step 5: Solve for x
    x = 336,772,714.44/20,434.50
  6. Step 6: Final answer
    x = 16,480.59

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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.