Home / 20,128.92-27,777.52-11,176.24

Finding the Fourth Proportional to 20,128.92, 27,777.52 and 11,176.24

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Solution

The fourth proportional to 20,128.92, 27,777.52 and 11,176.24 is: 15,422.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.92 : 27,777.52 = 11,176.24 : x
  2. Step 2: Convert to fraction form
    20,128.92/27,777.52 = 11,176.24/x
  3. Step 3: Cross multiply
    20,128.92x = 27,777.52 × 11,176.24
  4. Step 4: Simplify right side
    20,128.92x = 310,448,230.12
  5. Step 5: Solve for x
    x = 310,448,230.12/20,128.92
  6. Step 6: Final answer
    x = 15,422.99

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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.