Home / 21,674.51-29,912.04-12,724.61

Finding the Fourth Proportional to 21,674.51, 29,912.04 and 12,724.61

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Solution

The fourth proportional to 21,674.51, 29,912.04 and 12,724.61 is: 17,560.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,674.51 : 29,912.04 = 12,724.61 : x
  2. Step 2: Convert to fraction form
    21,674.51/29,912.04 = 12,724.61/x
  3. Step 3: Cross multiply
    21,674.51x = 29,912.04 × 12,724.61
  4. Step 4: Simplify right side
    21,674.51x = 380,619,043.30
  5. Step 5: Solve for x
    x = 380,619,043.30/21,674.51
  6. Step 6: Final answer
    x = 17,560.68

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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.