Home / 21,185.87-29,236.68-12,234.89

Finding the Fourth Proportional to 21,185.87, 29,236.68 and 12,234.89

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Solution

The fourth proportional to 21,185.87, 29,236.68 and 12,234.89 is: 16,884.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.87 : 29,236.68 = 12,234.89 : x
  2. Step 2: Convert to fraction form
    21,185.87/29,236.68 = 12,234.89/x
  3. Step 3: Cross multiply
    21,185.87x = 29,236.68 × 12,234.89
  4. Step 4: Simplify right side
    21,185.87x = 357,707,636.86
  5. Step 5: Solve for x
    x = 357,707,636.86/21,185.87
  6. Step 6: Final answer
    x = 16,884.26

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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.