Home / 21,160.72-29,201.61-11,600.64

Finding the Fourth Proportional to 21,160.72, 29,201.61 and 11,600.64

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Solution

The fourth proportional to 21,160.72, 29,201.61 and 11,600.64 is: 16,008.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.72 : 29,201.61 = 11,600.64 : x
  2. Step 2: Convert to fraction form
    21,160.72/29,201.61 = 11,600.64/x
  3. Step 3: Cross multiply
    21,160.72x = 29,201.61 × 11,600.64
  4. Step 4: Simplify right side
    21,160.72x = 338,757,365.03
  5. Step 5: Solve for x
    x = 338,757,365.03/21,160.72
  6. Step 6: Final answer
    x = 16,008.78

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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.