Home / 12,222.25-18,342.59-8,943.79

Finding the Fourth Proportional to 12,222.25, 18,342.59 and 8,943.79

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Solution

The fourth proportional to 12,222.25, 18,342.59 and 8,943.79 is: 13,422.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,222.25 : 18,342.59 = 8,943.79 : x
  2. Step 2: Convert to fraction form
    12,222.25/18,342.59 = 8,943.79/x
  3. Step 3: Cross multiply
    12,222.25x = 18,342.59 × 8,943.79
  4. Step 4: Simplify right side
    12,222.25x = 164,052,273.02
  5. Step 5: Solve for x
    x = 164,052,273.02/12,222.25
  6. Step 6: Final answer
    x = 13,422.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.