Home / 18,120.82-24,996.14-11,395.80

Finding the Fourth Proportional to 18,120.82, 24,996.14 and 11,395.80

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Solution

The fourth proportional to 18,120.82, 24,996.14 and 11,395.80 is: 15,719.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.82 : 24,996.14 = 11,395.80 : x
  2. Step 2: Convert to fraction form
    18,120.82/24,996.14 = 11,395.80/x
  3. Step 3: Cross multiply
    18,120.82x = 24,996.14 × 11,395.80
  4. Step 4: Simplify right side
    18,120.82x = 284,851,012.21
  5. Step 5: Solve for x
    x = 284,851,012.21/18,120.82
  6. Step 6: Final answer
    x = 15,719.54

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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.