Home / 20,103.20-27,741.36-11,150

Finding the Fourth Proportional to 20,103.20, 27,741.36 and 11,150

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Solution

The fourth proportional to 20,103.20, 27,741.36 and 11,150 is: 15,386.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.20 : 27,741.36 = 11,150 : x
  2. Step 2: Convert to fraction form
    20,103.20/27,741.36 = 11,150/x
  3. Step 3: Cross multiply
    20,103.20x = 27,741.36 × 11,150
  4. Step 4: Simplify right side
    20,103.20x = 309,316,164
  5. Step 5: Solve for x
    x = 309,316,164/20,103.20
  6. Step 6: Final answer
    x = 15,386.41

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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.