Home / 20,135.41-27,786.84-11,184.25

Finding the Fourth Proportional to 20,135.41, 27,786.84 and 11,184.25

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Solution

The fourth proportional to 20,135.41, 27,786.84 and 11,184.25 is: 15,434.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.41 : 27,786.84 = 11,184.25 : x
  2. Step 2: Convert to fraction form
    20,135.41/27,786.84 = 11,184.25/x
  3. Step 3: Cross multiply
    20,135.41x = 27,786.84 × 11,184.25
  4. Step 4: Simplify right side
    20,135.41x = 310,774,965.27
  5. Step 5: Solve for x
    x = 310,774,965.27/20,135.41
  6. Step 6: Final answer
    x = 15,434.25

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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.