Home / 12,222.64-18,331.80-3,457.36

Finding the Fourth Proportional to 12,222.64, 18,331.80 and 3,457.36

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Solution

The fourth proportional to 12,222.64, 18,331.80 and 3,457.36 is: 5,185.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,222.64 : 18,331.80 = 3,457.36 : x
  2. Step 2: Convert to fraction form
    12,222.64/18,331.80 = 3,457.36/x
  3. Step 3: Cross multiply
    12,222.64x = 18,331.80 × 3,457.36
  4. Step 4: Simplify right side
    12,222.64x = 63,379,632.05
  5. Step 5: Solve for x
    x = 63,379,632.05/12,222.64
  6. Step 6: Final answer
    x = 5,185.43

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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.