Home / 20,296.76-27,991.38-12,743.79

Finding the Fourth Proportional to 20,296.76, 27,991.38 and 12,743.79

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Solution

The fourth proportional to 20,296.76, 27,991.38 and 12,743.79 is: 17,575.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.76 : 27,991.38 = 12,743.79 : x
  2. Step 2: Convert to fraction form
    20,296.76/27,991.38 = 12,743.79/x
  3. Step 3: Cross multiply
    20,296.76x = 27,991.38 × 12,743.79
  4. Step 4: Simplify right side
    20,296.76x = 356,716,268.53
  5. Step 5: Solve for x
    x = 356,716,268.53/20,296.76
  6. Step 6: Final answer
    x = 17,575.04

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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.