Home / 12,111.26-18,166.90-4,318.26

Finding the Fourth Proportional to 12,111.26, 18,166.90 and 4,318.26

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Solution

The fourth proportional to 12,111.26, 18,166.90 and 4,318.26 is: 6,477.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111.26 : 18,166.90 = 4,318.26 : x
  2. Step 2: Convert to fraction form
    12,111.26/18,166.90 = 4,318.26/x
  3. Step 3: Cross multiply
    12,111.26x = 18,166.90 × 4,318.26
  4. Step 4: Simplify right side
    12,111.26x = 78,449,397.59
  5. Step 5: Solve for x
    x = 78,449,397.59/12,111.26
  6. Step 6: Final answer
    x = 6,477.39

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Similar ratio
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1.5x scale

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.