Home / 21,176.22-29,222.97-11,615.91

Finding the Fourth Proportional to 21,176.22, 29,222.97 and 11,615.91

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Solution

The fourth proportional to 21,176.22, 29,222.97 and 11,615.91 is: 16,029.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.22 : 29,222.97 = 11,615.91 : x
  2. Step 2: Convert to fraction form
    21,176.22/29,222.97 = 11,615.91/x
  3. Step 3: Cross multiply
    21,176.22x = 29,222.97 × 11,615.91
  4. Step 4: Simplify right side
    21,176.22x = 339,451,389.45
  5. Step 5: Solve for x
    x = 339,451,389.45/21,176.22
  6. Step 6: Final answer
    x = 16,029.84

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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.