Home / 20,145.24-27,800.40-11,193.57

Finding the Fourth Proportional to 20,145.24, 27,800.40 and 11,193.57

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Solution

The fourth proportional to 20,145.24, 27,800.40 and 11,193.57 is: 15,447.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.24 : 27,800.40 = 11,193.57 : x
  2. Step 2: Convert to fraction form
    20,145.24/27,800.40 = 11,193.57/x
  3. Step 3: Cross multiply
    20,145.24x = 27,800.40 × 11,193.57
  4. Step 4: Simplify right side
    20,145.24x = 311,185,723.43
  5. Step 5: Solve for x
    x = 311,185,723.43/20,145.24
  6. Step 6: Final answer
    x = 15,447.11

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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.