Home / 20,114.28-27,758.16-11,161.65

Finding the Fourth Proportional to 20,114.28, 27,758.16 and 11,161.65

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Solution

The fourth proportional to 20,114.28, 27,758.16 and 11,161.65 is: 15,403.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114.28 : 27,758.16 = 11,161.65 : x
  2. Step 2: Convert to fraction form
    20,114.28/27,758.16 = 11,161.65/x
  3. Step 3: Cross multiply
    20,114.28x = 27,758.16 × 11,161.65
  4. Step 4: Simplify right side
    20,114.28x = 309,826,866.56
  5. Step 5: Solve for x
    x = 309,826,866.56/20,114.28
  6. Step 6: Final answer
    x = 15,403.33

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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.