Home / 13,103.88-18,083.79-7,135.26

Finding the Fourth Proportional to 13,103.88, 18,083.79 and 7,135.26

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Solution

The fourth proportional to 13,103.88, 18,083.79 and 7,135.26 is: 9,846.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.88 : 18,083.79 = 7,135.26 : x
  2. Step 2: Convert to fraction form
    13,103.88/18,083.79 = 7,135.26/x
  3. Step 3: Cross multiply
    13,103.88x = 18,083.79 × 7,135.26
  4. Step 4: Simplify right side
    13,103.88x = 129,032,543.44
  5. Step 5: Solve for x
    x = 129,032,543.44/13,103.88
  6. Step 6: Final answer
    x = 9,846.90

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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.