Home / 20,821.04-28,739.04-11,873.44

Finding the Fourth Proportional to 20,821.04, 28,739.04 and 11,873.44

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Solution

The fourth proportional to 20,821.04, 28,739.04 and 11,873.44 is: 16,388.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,821.04 : 28,739.04 = 11,873.44 : x
  2. Step 2: Convert to fraction form
    20,821.04/28,739.04 = 11,873.44/x
  3. Step 3: Cross multiply
    20,821.04x = 28,739.04 × 11,873.44
  4. Step 4: Simplify right side
    20,821.04x = 341,231,267.10
  5. Step 5: Solve for x
    x = 341,231,267.10/20,821.04
  6. Step 6: Final answer
    x = 16,388.77

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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.