Home / 21,736.89-29,996.87-12,306.33

Finding the Fourth Proportional to 21,736.89, 29,996.87 and 12,306.33

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Solution

The fourth proportional to 21,736.89, 29,996.87 and 12,306.33 is: 16,982.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,736.89 : 29,996.87 = 12,306.33 : x
  2. Step 2: Convert to fraction form
    21,736.89/29,996.87 = 12,306.33/x
  3. Step 3: Cross multiply
    21,736.89x = 29,996.87 × 12,306.33
  4. Step 4: Simplify right side
    21,736.89x = 369,151,319.66
  5. Step 5: Solve for x
    x = 369,151,319.66/21,736.89
  6. Step 6: Final answer
    x = 16,982.71

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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.