Home / 21,186.73-29,239.08-12,234.61

Finding the Fourth Proportional to 21,186.73, 29,239.08 and 12,234.61

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Solution

The fourth proportional to 21,186.73, 29,239.08 and 12,234.61 is: 16,884.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.73 : 29,239.08 = 12,234.61 : x
  2. Step 2: Convert to fraction form
    21,186.73/29,239.08 = 12,234.61/x
  3. Step 3: Cross multiply
    21,186.73x = 29,239.08 × 12,234.61
  4. Step 4: Simplify right side
    21,186.73x = 357,728,679.39
  5. Step 5: Solve for x
    x = 357,728,679.39/21,186.73
  6. Step 6: Final answer
    x = 16,884.56

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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.