Home / 20,129.33-27,775.52-11,176.91

Finding the Fourth Proportional to 20,129.33, 27,775.52 and 11,176.91

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Solution

The fourth proportional to 20,129.33, 27,775.52 and 11,176.91 is: 15,422.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.33 : 27,775.52 = 11,176.91 : x
  2. Step 2: Convert to fraction form
    20,129.33/27,775.52 = 11,176.91/x
  3. Step 3: Cross multiply
    20,129.33x = 27,775.52 × 11,176.91
  4. Step 4: Simplify right side
    20,129.33x = 310,444,431.36
  5. Step 5: Solve for x
    x = 310,444,431.36/20,129.33
  6. Step 6: Final answer
    x = 15,422.49

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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.