Home / 15,170.66-20,936.23-8,456.33

Finding the Fourth Proportional to 15,170.66, 20,936.23 and 8,456.33

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Solution

The fourth proportional to 15,170.66, 20,936.23 and 8,456.33 is: 11,670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,170.66 : 20,936.23 = 8,456.33 : x
  2. Step 2: Convert to fraction form
    15,170.66/20,936.23 = 8,456.33/x
  3. Step 3: Cross multiply
    15,170.66x = 20,936.23 × 8,456.33
  4. Step 4: Simplify right side
    15,170.66x = 177,043,627.55
  5. Step 5: Solve for x
    x = 177,043,627.55/15,170.66
  6. Step 6: Final answer
    x = 11,670.14

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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.