Home / 21,144.90-29,181.48-11,714.10

Finding the Fourth Proportional to 21,144.90, 29,181.48 and 11,714.10

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Solution

The fourth proportional to 21,144.90, 29,181.48 and 11,714.10 is: 16,166.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.90 : 29,181.48 = 11,714.10 : x
  2. Step 2: Convert to fraction form
    21,144.90/29,181.48 = 11,714.10/x
  3. Step 3: Cross multiply
    21,144.90x = 29,181.48 × 11,714.10
  4. Step 4: Simplify right side
    21,144.90x = 341,834,774.87
  5. Step 5: Solve for x
    x = 341,834,774.87/21,144.90
  6. Step 6: Final answer
    x = 16,166.30

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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.