Home / 20,105.21-27,743.22-11,152.52

Finding the Fourth Proportional to 20,105.21, 27,743.22 and 11,152.52

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Solution

The fourth proportional to 20,105.21, 27,743.22 and 11,152.52 is: 15,389.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.21 : 27,743.22 = 11,152.52 : x
  2. Step 2: Convert to fraction form
    20,105.21/27,743.22 = 11,152.52/x
  3. Step 3: Cross multiply
    20,105.21x = 27,743.22 × 11,152.52
  4. Step 4: Simplify right side
    20,105.21x = 309,406,815.91
  5. Step 5: Solve for x
    x = 309,406,815.91/20,105.21
  6. Step 6: Final answer
    x = 15,389.38

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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.