Home / 20,287.04-27,996.30-11,212.88

Finding the Fourth Proportional to 20,287.04, 27,996.30 and 11,212.88

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Solution

The fourth proportional to 20,287.04, 27,996.30 and 11,212.88 is: 15,473.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.04 : 27,996.30 = 11,212.88 : x
  2. Step 2: Convert to fraction form
    20,287.04/27,996.30 = 11,212.88/x
  3. Step 3: Cross multiply
    20,287.04x = 27,996.30 × 11,212.88
  4. Step 4: Simplify right side
    20,287.04x = 313,919,152.34
  5. Step 5: Solve for x
    x = 313,919,152.34/20,287.04
  6. Step 6: Final answer
    x = 15,473.88

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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.