Home / 12,170.09-18,240.91-10,786.12

Finding the Fourth Proportional to 12,170.09, 18,240.91 and 10,786.12

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Solution

The fourth proportional to 12,170.09, 18,240.91 and 10,786.12 is: 16,166.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.09 : 18,240.91 = 10,786.12 : x
  2. Step 2: Convert to fraction form
    12,170.09/18,240.91 = 10,786.12/x
  3. Step 3: Cross multiply
    12,170.09x = 18,240.91 × 10,786.12
  4. Step 4: Simplify right side
    12,170.09x = 196,748,715.03
  5. Step 5: Solve for x
    x = 196,748,715.03/12,170.09
  6. Step 6: Final answer
    x = 16,166.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.