Home / 21,157.38-29,197.44-11,725.92

Finding the Fourth Proportional to 21,157.38, 29,197.44 and 11,725.92

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Solution

The fourth proportional to 21,157.38, 29,197.44 and 11,725.92 is: 16,181.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.38 : 29,197.44 = 11,725.92 : x
  2. Step 2: Convert to fraction form
    21,157.38/29,197.44 = 11,725.92/x
  3. Step 3: Cross multiply
    21,157.38x = 29,197.44 × 11,725.92
  4. Step 4: Simplify right side
    21,157.38x = 342,366,845.64
  5. Step 5: Solve for x
    x = 342,366,845.64/21,157.38
  6. Step 6: Final answer
    x = 16,181.91

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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.