Home / 13,104.12-18,083.70-7,135.74

Finding the Fourth Proportional to 13,104.12, 18,083.70 and 7,135.74

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Solution

The fourth proportional to 13,104.12, 18,083.70 and 7,135.74 is: 9,847.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.12 : 18,083.70 = 7,135.74 : x
  2. Step 2: Convert to fraction form
    13,104.12/18,083.70 = 7,135.74/x
  3. Step 3: Cross multiply
    13,104.12x = 18,083.70 × 7,135.74
  4. Step 4: Simplify right side
    13,104.12x = 129,040,581.44
  5. Step 5: Solve for x
    x = 129,040,581.44/13,104.12
  6. Step 6: Final answer
    x = 9,847.33

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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.