Home / 13,175.51-18,177.11-8,394.61

Finding the Fourth Proportional to 13,175.51, 18,177.11 and 8,394.61

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Solution

The fourth proportional to 13,175.51, 18,177.11 and 8,394.61 is: 11,581.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.51 : 18,177.11 = 8,394.61 : x
  2. Step 2: Convert to fraction form
    13,175.51/18,177.11 = 8,394.61/x
  3. Step 3: Cross multiply
    13,175.51x = 18,177.11 × 8,394.61
  4. Step 4: Simplify right side
    13,175.51x = 152,589,661.96
  5. Step 5: Solve for x
    x = 152,589,661.96/13,175.51
  6. Step 6: Final answer
    x = 11,581.31

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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.