Home / 21,181.78-29,230.41-11,750.26

Finding the Fourth Proportional to 21,181.78, 29,230.41 and 11,750.26

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Solution

The fourth proportional to 21,181.78, 29,230.41 and 11,750.26 is: 16,215.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.78 : 29,230.41 = 11,750.26 : x
  2. Step 2: Convert to fraction form
    21,181.78/29,230.41 = 11,750.26/x
  3. Step 3: Cross multiply
    21,181.78x = 29,230.41 × 11,750.26
  4. Step 4: Simplify right side
    21,181.78x = 343,464,917.41
  5. Step 5: Solve for x
    x = 343,464,917.41/21,181.78
  6. Step 6: Final answer
    x = 16,215.11

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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.