Home / 20,103.30-27,746.94-11,153.88

Finding the Fourth Proportional to 20,103.30, 27,746.94 and 11,153.88

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Solution

The fourth proportional to 20,103.30, 27,746.94 and 11,153.88 is: 15,394.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.30 : 27,746.94 = 11,153.88 : x
  2. Step 2: Convert to fraction form
    20,103.30/27,746.94 = 11,153.88/x
  3. Step 3: Cross multiply
    20,103.30x = 27,746.94 × 11,153.88
  4. Step 4: Simplify right side
    20,103.30x = 309,486,039.13
  5. Step 5: Solve for x
    x = 309,486,039.13/20,103.30
  6. Step 6: Final answer
    x = 15,394.79

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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.