Home / 21,181.88-29,231-11,750.44

Finding the Fourth Proportional to 21,181.88, 29,231 and 11,750.44

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Solution

The fourth proportional to 21,181.88, 29,231 and 11,750.44 is: 16,215.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.88 : 29,231 = 11,750.44 : x
  2. Step 2: Convert to fraction form
    21,181.88/29,231 = 11,750.44/x
  3. Step 3: Cross multiply
    21,181.88x = 29,231 × 11,750.44
  4. Step 4: Simplify right side
    21,181.88x = 343,477,111.64
  5. Step 5: Solve for x
    x = 343,477,111.64/21,181.88
  6. Step 6: Final answer
    x = 16,215.61

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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.