Home / 21,742.26-29,997.52-12,180.87

Finding the Fourth Proportional to 21,742.26, 29,997.52 and 12,180.87

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Solution

The fourth proportional to 21,742.26, 29,997.52 and 12,180.87 is: 16,805.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,742.26 : 29,997.52 = 12,180.87 : x
  2. Step 2: Convert to fraction form
    21,742.26/29,997.52 = 12,180.87/x
  3. Step 3: Cross multiply
    21,742.26x = 29,997.52 × 12,180.87
  4. Step 4: Simplify right side
    21,742.26x = 365,395,741.45
  5. Step 5: Solve for x
    x = 365,395,741.45/21,742.26
  6. Step 6: Final answer
    x = 16,805.78

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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.