Home / 21,617.72-29,832.41-12,186.22

Finding the Fourth Proportional to 21,617.72, 29,832.41 and 12,186.22

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Solution

The fourth proportional to 21,617.72, 29,832.41 and 12,186.22 is: 16,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.72 : 29,832.41 = 12,186.22 : x
  2. Step 2: Convert to fraction form
    21,617.72/29,832.41 = 12,186.22/x
  3. Step 3: Cross multiply
    21,617.72x = 29,832.41 × 12,186.22
  4. Step 4: Simplify right side
    21,617.72x = 363,544,101.30
  5. Step 5: Solve for x
    x = 363,544,101.30/21,617.72
  6. Step 6: Final answer
    x = 16,816.95

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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.