Home / 20,103.39-27,742.91-11,151.17

Finding the Fourth Proportional to 20,103.39, 27,742.91 and 11,151.17

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Solution

The fourth proportional to 20,103.39, 27,742.91 and 11,151.17 is: 15,388.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.39 : 27,742.91 = 11,151.17 : x
  2. Step 2: Convert to fraction form
    20,103.39/27,742.91 = 11,151.17/x
  3. Step 3: Cross multiply
    20,103.39x = 27,742.91 × 11,151.17
  4. Step 4: Simplify right side
    20,103.39x = 309,365,815.27
  5. Step 5: Solve for x
    x = 309,365,815.27/20,103.39
  6. Step 6: Final answer
    x = 15,388.74

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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.