Home / 21,717.62-29,968.22-12,157.02

Finding the Fourth Proportional to 21,717.62, 29,968.22 and 12,157.02

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Solution

The fourth proportional to 21,717.62, 29,968.22 and 12,157.02 is: 16,775.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,717.62 : 29,968.22 = 12,157.02 : x
  2. Step 2: Convert to fraction form
    21,717.62/29,968.22 = 12,157.02/x
  3. Step 3: Cross multiply
    21,717.62x = 29,968.22 × 12,157.02
  4. Step 4: Simplify right side
    21,717.62x = 364,324,249.90
  5. Step 5: Solve for x
    x = 364,324,249.90/21,717.62
  6. Step 6: Final answer
    x = 16,775.51

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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.