Home / 13,109.99-18,091.69-7,141.66

Finding the Fourth Proportional to 13,109.99, 18,091.69 and 7,141.66

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Solution

The fourth proportional to 13,109.99, 18,091.69 and 7,141.66 is: 9,855.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.99 : 18,091.69 = 7,141.66 : x
  2. Step 2: Convert to fraction form
    13,109.99/18,091.69 = 7,141.66/x
  3. Step 3: Cross multiply
    13,109.99x = 18,091.69 × 7,141.66
  4. Step 4: Simplify right side
    13,109.99x = 129,204,662.50
  5. Step 5: Solve for x
    x = 129,204,662.50/13,109.99
  6. Step 6: Final answer
    x = 9,855.44

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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.