Home / 27,906.60-38,511.36-15,331.36

Finding the Fourth Proportional to 27,906.60, 38,511.36 and 15,331.36

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Solution

The fourth proportional to 27,906.60, 38,511.36 and 15,331.36 is: 21,157.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,906.60 : 38,511.36 = 15,331.36 : x
  2. Step 2: Convert to fraction form
    27,906.60/38,511.36 = 15,331.36/x
  3. Step 3: Cross multiply
    27,906.60x = 38,511.36 × 15,331.36
  4. Step 4: Simplify right side
    27,906.60x = 590,431,524.25
  5. Step 5: Solve for x
    x = 590,431,524.25/27,906.60
  6. Step 6: Final answer
    x = 21,157.42

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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.