Home / 21,741.21-29,995.83-12,179.64

Finding the Fourth Proportional to 21,741.21, 29,995.83 and 12,179.64

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Solution

The fourth proportional to 21,741.21, 29,995.83 and 12,179.64 is: 16,803.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,741.21 : 29,995.83 = 12,179.64 : x
  2. Step 2: Convert to fraction form
    21,741.21/29,995.83 = 12,179.64/x
  3. Step 3: Cross multiply
    21,741.21x = 29,995.83 × 12,179.64
  4. Step 4: Simplify right side
    21,741.21x = 365,338,410.90
  5. Step 5: Solve for x
    x = 365,338,410.90/21,741.21
  6. Step 6: Final answer
    x = 16,803.96

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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.