Home / 20,103.21-27,740.46-11,150.52

Finding the Fourth Proportional to 20,103.21, 27,740.46 and 11,150.52

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Solution

The fourth proportional to 20,103.21, 27,740.46 and 11,150.52 is: 15,386.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.21 : 27,740.46 = 11,150.52 : x
  2. Step 2: Convert to fraction form
    20,103.21/27,740.46 = 11,150.52/x
  3. Step 3: Cross multiply
    20,103.21x = 27,740.46 × 11,150.52
  4. Step 4: Simplify right side
    20,103.21x = 309,320,554.04
  5. Step 5: Solve for x
    x = 309,320,554.04/20,103.21
  6. Step 6: Final answer
    x = 15,386.63

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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.