Home / 13,187.43-18,198.60-7,137.66

Finding the Fourth Proportional to 13,187.43, 18,198.60 and 7,137.66

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Solution

The fourth proportional to 13,187.43, 18,198.60 and 7,137.66 is: 9,849.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.43 : 18,198.60 = 7,137.66 : x
  2. Step 2: Convert to fraction form
    13,187.43/18,198.60 = 7,137.66/x
  3. Step 3: Cross multiply
    13,187.43x = 18,198.60 × 7,137.66
  4. Step 4: Simplify right side
    13,187.43x = 129,895,419.28
  5. Step 5: Solve for x
    x = 129,895,419.28/13,187.43
  6. Step 6: Final answer
    x = 9,849.94

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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.