Home / 21,181.52-29,230.68-11,750.32

Finding the Fourth Proportional to 21,181.52, 29,230.68 and 11,750.32

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Solution

The fourth proportional to 21,181.52, 29,230.68 and 11,750.32 is: 16,215.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.52 : 29,230.68 = 11,750.32 : x
  2. Step 2: Convert to fraction form
    21,181.52/29,230.68 = 11,750.32/x
  3. Step 3: Cross multiply
    21,181.52x = 29,230.68 × 11,750.32
  4. Step 4: Simplify right side
    21,181.52x = 343,469,843.82
  5. Step 5: Solve for x
    x = 343,469,843.82/21,181.52
  6. Step 6: Final answer
    x = 16,215.54

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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.