Home / 21,714.75-29,966.36-11,778.75

Finding the Fourth Proportional to 21,714.75, 29,966.36 and 11,778.75

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Solution

The fourth proportional to 21,714.75, 29,966.36 and 11,778.75 is: 16,254.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,714.75 : 29,966.36 = 11,778.75 : x
  2. Step 2: Convert to fraction form
    21,714.75/29,966.36 = 11,778.75/x
  3. Step 3: Cross multiply
    21,714.75x = 29,966.36 × 11,778.75
  4. Step 4: Simplify right side
    21,714.75x = 352,966,203.96
  5. Step 5: Solve for x
    x = 352,966,203.96/21,714.75
  6. Step 6: Final answer
    x = 16,254.68

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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.