Home / 12,220.26-18,331.75-3,455.86

Finding the Fourth Proportional to 12,220.26, 18,331.75 and 3,455.86

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Solution

The fourth proportional to 12,220.26, 18,331.75 and 3,455.86 is: 5,184.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.26 : 18,331.75 = 3,455.86 : x
  2. Step 2: Convert to fraction form
    12,220.26/18,331.75 = 3,455.86/x
  3. Step 3: Cross multiply
    12,220.26x = 18,331.75 × 3,455.86
  4. Step 4: Simplify right side
    12,220.26x = 63,351,869.90
  5. Step 5: Solve for x
    x = 63,351,869.90/12,220.26
  6. Step 6: Final answer
    x = 5,184.17

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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.