Home / 20,103.08-27,740.42-11,150.55

Finding the Fourth Proportional to 20,103.08, 27,740.42 and 11,150.55

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Solution

The fourth proportional to 20,103.08, 27,740.42 and 11,150.55 is: 15,386.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.08 : 27,740.42 = 11,150.55 : x
  2. Step 2: Convert to fraction form
    20,103.08/27,740.42 = 11,150.55/x
  3. Step 3: Cross multiply
    20,103.08x = 27,740.42 × 11,150.55
  4. Step 4: Simplify right side
    20,103.08x = 309,320,884.48
  5. Step 5: Solve for x
    x = 309,320,884.48/20,103.08
  6. Step 6: Final answer
    x = 15,386.74

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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.