Home / 20,489.04-30,714.33-11,115.30

Finding the Fourth Proportional to 20,489.04, 30,714.33 and 11,115.30

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Solution

The fourth proportional to 20,489.04, 30,714.33 and 11,115.30 is: 16,662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.04 : 30,714.33 = 11,115.30 : x
  2. Step 2: Convert to fraction form
    20,489.04/30,714.33 = 11,115.30/x
  3. Step 3: Cross multiply
    20,489.04x = 30,714.33 × 11,115.30
  4. Step 4: Simplify right side
    20,489.04x = 341,398,992.25
  5. Step 5: Solve for x
    x = 341,398,992.25/20,489.04
  6. Step 6: Final answer
    x = 16,662.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.