Home / 13,187.26-18,198.43-7,218.94

Finding the Fourth Proportional to 13,187.26, 18,198.43 and 7,218.94

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Solution

The fourth proportional to 13,187.26, 18,198.43 and 7,218.94 is: 9,962.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.26 : 18,198.43 = 7,218.94 : x
  2. Step 2: Convert to fraction form
    13,187.26/18,198.43 = 7,218.94/x
  3. Step 3: Cross multiply
    13,187.26x = 18,198.43 × 7,218.94
  4. Step 4: Simplify right side
    13,187.26x = 131,373,411.15
  5. Step 5: Solve for x
    x = 131,373,411.15/13,187.26
  6. Step 6: Final answer
    x = 9,962.15

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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.