Home / 13,104.21-18,083.22-7,135.86

Finding the Fourth Proportional to 13,104.21, 18,083.22 and 7,135.86

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Solution

The fourth proportional to 13,104.21, 18,083.22 and 7,135.86 is: 9,847.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.21 : 18,083.22 = 7,135.86 : x
  2. Step 2: Convert to fraction form
    13,104.21/18,083.22 = 7,135.86/x
  3. Step 3: Cross multiply
    13,104.21x = 18,083.22 × 7,135.86
  4. Step 4: Simplify right side
    13,104.21x = 129,039,326.27
  5. Step 5: Solve for x
    x = 129,039,326.27/13,104.21
  6. Step 6: Final answer
    x = 9,847.17

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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.