Home / 27,679.22-38,198.69-15,743.67

Finding the Fourth Proportional to 27,679.22, 38,198.69 and 15,743.67

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Solution

The fourth proportional to 27,679.22, 38,198.69 and 15,743.67 is: 21,727.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,679.22 : 38,198.69 = 15,743.67 : x
  2. Step 2: Convert to fraction form
    27,679.22/38,198.69 = 15,743.67/x
  3. Step 3: Cross multiply
    27,679.22x = 38,198.69 × 15,743.67
  4. Step 4: Simplify right side
    27,679.22x = 601,387,406.87
  5. Step 5: Solve for x
    x = 601,387,406.87/27,679.22
  6. Step 6: Final answer
    x = 21,727.04

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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.