Home / 21,146.32-29,181.68-11,714.88

Finding the Fourth Proportional to 21,146.32, 29,181.68 and 11,714.88

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Solution

The fourth proportional to 21,146.32, 29,181.68 and 11,714.88 is: 16,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.32 : 29,181.68 = 11,714.88 : x
  2. Step 2: Convert to fraction form
    21,146.32/29,181.68 = 11,714.88/x
  3. Step 3: Cross multiply
    21,146.32x = 29,181.68 × 11,714.88
  4. Step 4: Simplify right side
    21,146.32x = 341,859,879.40
  5. Step 5: Solve for x
    x = 341,859,879.40/21,146.32
  6. Step 6: Final answer
    x = 16,166.40

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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.