Home / 20,616.99-28,451.43-11,185.56

Finding the Fourth Proportional to 20,616.99, 28,451.43 and 11,185.56

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Solution

The fourth proportional to 20,616.99, 28,451.43 and 11,185.56 is: 15,436.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.99 : 28,451.43 = 11,185.56 : x
  2. Step 2: Convert to fraction form
    20,616.99/28,451.43 = 11,185.56/x
  3. Step 3: Cross multiply
    20,616.99x = 28,451.43 × 11,185.56
  4. Step 4: Simplify right side
    20,616.99x = 318,245,177.35
  5. Step 5: Solve for x
    x = 318,245,177.35/20,616.99
  6. Step 6: Final answer
    x = 15,436.06

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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.