Home / 13,175.96-18,190.34-8,712.65

Finding the Fourth Proportional to 13,175.96, 18,190.34 and 8,712.65

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Solution

The fourth proportional to 13,175.96, 18,190.34 and 8,712.65 is: 12,028.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.96 : 18,190.34 = 8,712.65 : x
  2. Step 2: Convert to fraction form
    13,175.96/18,190.34 = 8,712.65/x
  3. Step 3: Cross multiply
    13,175.96x = 18,190.34 × 8,712.65
  4. Step 4: Simplify right side
    13,175.96x = 158,486,133.06
  5. Step 5: Solve for x
    x = 158,486,133.06/13,175.96
  6. Step 6: Final answer
    x = 12,028.44

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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.