Home / 20,103.45-27,742.77-11,151.06

Finding the Fourth Proportional to 20,103.45, 27,742.77 and 11,151.06

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Solution

The fourth proportional to 20,103.45, 27,742.77 and 11,151.06 is: 15,388.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.45 : 27,742.77 = 11,151.06 : x
  2. Step 2: Convert to fraction form
    20,103.45/27,742.77 = 11,151.06/x
  3. Step 3: Cross multiply
    20,103.45x = 27,742.77 × 11,151.06
  4. Step 4: Simplify right side
    20,103.45x = 309,361,292.84
  5. Step 5: Solve for x
    x = 309,361,292.84/20,103.45
  6. Step 6: Final answer
    x = 15,388.47

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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.