Home / 13,104.14-18,083.09-7,135.78

Finding the Fourth Proportional to 13,104.14, 18,083.09 and 7,135.78

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Solution

The fourth proportional to 13,104.14, 18,083.09 and 7,135.78 is: 9,847.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.14 : 18,083.09 = 7,135.78 : x
  2. Step 2: Convert to fraction form
    13,104.14/18,083.09 = 7,135.78/x
  3. Step 3: Cross multiply
    13,104.14x = 18,083.09 × 7,135.78
  4. Step 4: Simplify right side
    13,104.14x = 129,036,951.96
  5. Step 5: Solve for x
    x = 129,036,951.96/13,104.14
  6. Step 6: Final answer
    x = 9,847.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.