Home / 21,145.44-29,179.32-11,713.68

Finding the Fourth Proportional to 21,145.44, 29,179.32 and 11,713.68

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Solution

The fourth proportional to 21,145.44, 29,179.32 and 11,713.68 is: 16,164.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.44 : 29,179.32 = 11,713.68 : x
  2. Step 2: Convert to fraction form
    21,145.44/29,179.32 = 11,713.68/x
  3. Step 3: Cross multiply
    21,145.44x = 29,179.32 × 11,713.68
  4. Step 4: Simplify right side
    21,145.44x = 341,797,217.10
  5. Step 5: Solve for x
    x = 341,797,217.10/21,145.44
  6. Step 6: Final answer
    x = 16,164.11

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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.