Home / 12,085.80-18,126.66-3,318.68

Finding the Fourth Proportional to 12,085.80, 18,126.66 and 3,318.68

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Solution

The fourth proportional to 12,085.80, 18,126.66 and 3,318.68 is: 4,977.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.80 : 18,126.66 = 3,318.68 : x
  2. Step 2: Convert to fraction form
    12,085.80/18,126.66 = 3,318.68/x
  3. Step 3: Cross multiply
    12,085.80x = 18,126.66 × 3,318.68
  4. Step 4: Simplify right side
    12,085.80x = 60,156,584.01
  5. Step 5: Solve for x
    x = 60,156,584.01/12,085.80
  6. Step 6: Final answer
    x = 4,977.46

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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.