Home / 21,020.12-29,007.97-11,589.02

Finding the Fourth Proportional to 21,020.12, 29,007.97 and 11,589.02

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Solution

The fourth proportional to 21,020.12, 29,007.97 and 11,589.02 is: 15,992.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.12 : 29,007.97 = 11,589.02 : x
  2. Step 2: Convert to fraction form
    21,020.12/29,007.97 = 11,589.02/x
  3. Step 3: Cross multiply
    21,020.12x = 29,007.97 × 11,589.02
  4. Step 4: Simplify right side
    21,020.12x = 336,173,944.49
  5. Step 5: Solve for x
    x = 336,173,944.49/21,020.12
  6. Step 6: Final answer
    x = 15,992.96

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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.