Home / 20,996.48-28,976.36-12,043.92

Finding the Fourth Proportional to 20,996.48, 28,976.36 and 12,043.92

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Solution

The fourth proportional to 20,996.48, 28,976.36 and 12,043.92 is: 16,621.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.48 : 28,976.36 = 12,043.92 : x
  2. Step 2: Convert to fraction form
    20,996.48/28,976.36 = 12,043.92/x
  3. Step 3: Cross multiply
    20,996.48x = 28,976.36 × 12,043.92
  4. Step 4: Simplify right side
    20,996.48x = 348,988,961.73
  5. Step 5: Solve for x
    x = 348,988,961.73/20,996.48
  6. Step 6: Final answer
    x = 16,621.31

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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.