Home / 22,218.39-30,664.08-12,786.75

Finding the Fourth Proportional to 22,218.39, 30,664.08 and 12,786.75

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Solution

The fourth proportional to 22,218.39, 30,664.08 and 12,786.75 is: 17,647.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,218.39 : 30,664.08 = 12,786.75 : x
  2. Step 2: Convert to fraction form
    22,218.39/30,664.08 = 12,786.75/x
  3. Step 3: Cross multiply
    22,218.39x = 30,664.08 × 12,786.75
  4. Step 4: Simplify right side
    22,218.39x = 392,093,924.94
  5. Step 5: Solve for x
    x = 392,093,924.94/22,218.39
  6. Step 6: Final answer
    x = 17,647.27

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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.