Home / 20,131.04-27,781.64-11,632.88

Finding the Fourth Proportional to 20,131.04, 27,781.64 and 11,632.88

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Solution

The fourth proportional to 20,131.04, 27,781.64 and 11,632.88 is: 16,053.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.04 : 27,781.64 = 11,632.88 : x
  2. Step 2: Convert to fraction form
    20,131.04/27,781.64 = 11,632.88/x
  3. Step 3: Cross multiply
    20,131.04x = 27,781.64 × 11,632.88
  4. Step 4: Simplify right side
    20,131.04x = 323,180,287.25
  5. Step 5: Solve for x
    x = 323,180,287.25/20,131.04
  6. Step 6: Final answer
    x = 16,053.83

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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.