Home / 21,751.36-30,016.38-12,796.90

Finding the Fourth Proportional to 21,751.36, 30,016.38 and 12,796.90

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Solution

The fourth proportional to 21,751.36, 30,016.38 and 12,796.90 is: 17,659.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.36 : 30,016.38 = 12,796.90 : x
  2. Step 2: Convert to fraction form
    21,751.36/30,016.38 = 12,796.90/x
  3. Step 3: Cross multiply
    21,751.36x = 30,016.38 × 12,796.90
  4. Step 4: Simplify right side
    21,751.36x = 384,116,613.22
  5. Step 5: Solve for x
    x = 384,116,613.22/21,751.36
  6. Step 6: Final answer
    x = 17,659.43

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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.