Home / 13,104.10-18,083.78-7,135.80

Finding the Fourth Proportional to 13,104.10, 18,083.78 and 7,135.80

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Solution

The fourth proportional to 13,104.10, 18,083.78 and 7,135.80 is: 9,847.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.10 : 18,083.78 = 7,135.80 : x
  2. Step 2: Convert to fraction form
    13,104.10/18,083.78 = 7,135.80/x
  3. Step 3: Cross multiply
    13,104.10x = 18,083.78 × 7,135.80
  4. Step 4: Simplify right side
    13,104.10x = 129,042,237.32
  5. Step 5: Solve for x
    x = 129,042,237.32/13,104.10
  6. Step 6: Final answer
    x = 9,847.47

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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.