Home / 13,156.26-18,160.83-8,122.51

Finding the Fourth Proportional to 13,156.26, 18,160.83 and 8,122.51

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Solution

The fourth proportional to 13,156.26, 18,160.83 and 8,122.51 is: 11,212.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.26 : 18,160.83 = 8,122.51 : x
  2. Step 2: Convert to fraction form
    13,156.26/18,160.83 = 8,122.51/x
  3. Step 3: Cross multiply
    13,156.26x = 18,160.83 × 8,122.51
  4. Step 4: Simplify right side
    13,156.26x = 147,511,523.28
  5. Step 5: Solve for x
    x = 147,511,523.28/13,156.26
  6. Step 6: Final answer
    x = 11,212.27

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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.