Home / 12,083.96-18,120.80-4,687.04

Finding the Fourth Proportional to 12,083.96, 18,120.80 and 4,687.04

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Solution

The fourth proportional to 12,083.96, 18,120.80 and 4,687.04 is: 7,028.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,083.96 : 18,120.80 = 4,687.04 : x
  2. Step 2: Convert to fraction form
    12,083.96/18,120.80 = 4,687.04/x
  3. Step 3: Cross multiply
    12,083.96x = 18,120.80 × 4,687.04
  4. Step 4: Simplify right side
    12,083.96x = 84,932,914.43
  5. Step 5: Solve for x
    x = 84,932,914.43/12,083.96
  6. Step 6: Final answer
    x = 7,028.57

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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.