Home / 20,137.28-27,790.37-11,184.81

Finding the Fourth Proportional to 20,137.28, 27,790.37 and 11,184.81

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Solution

The fourth proportional to 20,137.28, 27,790.37 and 11,184.81 is: 15,435.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.28 : 27,790.37 = 11,184.81 : x
  2. Step 2: Convert to fraction form
    20,137.28/27,790.37 = 11,184.81/x
  3. Step 3: Cross multiply
    20,137.28x = 27,790.37 × 11,184.81
  4. Step 4: Simplify right side
    20,137.28x = 310,829,952.36
  5. Step 5: Solve for x
    x = 310,829,952.36/20,137.28
  6. Step 6: Final answer
    x = 15,435.55

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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.