Home / 27,679.30-38,197.26-15,742.60

Finding the Fourth Proportional to 27,679.30, 38,197.26 and 15,742.60

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Solution

The fourth proportional to 27,679.30, 38,197.26 and 15,742.60 is: 21,724.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,679.30 : 38,197.26 = 15,742.60 : x
  2. Step 2: Convert to fraction form
    27,679.30/38,197.26 = 15,742.60/x
  3. Step 3: Cross multiply
    27,679.30x = 38,197.26 × 15,742.60
  4. Step 4: Simplify right side
    27,679.30x = 601,324,185.28
  5. Step 5: Solve for x
    x = 601,324,185.28/27,679.30
  6. Step 6: Final answer
    x = 21,724.69

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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.