Home / 21,020.77-29,009.94-11,589.31

Finding the Fourth Proportional to 21,020.77, 29,009.94 and 11,589.31

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Solution

The fourth proportional to 21,020.77, 29,009.94 and 11,589.31 is: 15,993.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.77 : 29,009.94 = 11,589.31 : x
  2. Step 2: Convert to fraction form
    21,020.77/29,009.94 = 11,589.31/x
  3. Step 3: Cross multiply
    21,020.77x = 29,009.94 × 11,589.31
  4. Step 4: Simplify right side
    21,020.77x = 336,205,187.74
  5. Step 5: Solve for x
    x = 336,205,187.74/21,020.77
  6. Step 6: Final answer
    x = 15,993.95

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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.