Home / 21,617.35-29,832.40-12,185.91

Finding the Fourth Proportional to 21,617.35, 29,832.40 and 12,185.91

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Solution

The fourth proportional to 21,617.35, 29,832.40 and 12,185.91 is: 16,816.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.35 : 29,832.40 = 12,185.91 : x
  2. Step 2: Convert to fraction form
    21,617.35/29,832.40 = 12,185.91/x
  3. Step 3: Cross multiply
    21,617.35x = 29,832.40 × 12,185.91
  4. Step 4: Simplify right side
    21,617.35x = 363,534,731.39
  5. Step 5: Solve for x
    x = 363,534,731.39/21,617.35
  6. Step 6: Final answer
    x = 16,816.81

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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.