Home / 27,906.96-38,511.56-15,331.72

Finding the Fourth Proportional to 27,906.96, 38,511.56 and 15,331.72

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Solution

The fourth proportional to 27,906.96, 38,511.56 and 15,331.72 is: 21,157.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,906.96 : 38,511.56 = 15,331.72 : x
  2. Step 2: Convert to fraction form
    27,906.96/38,511.56 = 15,331.72/x
  3. Step 3: Cross multiply
    27,906.96x = 38,511.56 × 15,331.72
  4. Step 4: Simplify right side
    27,906.96x = 590,448,454.68
  5. Step 5: Solve for x
    x = 590,448,454.68/27,906.96
  6. Step 6: Final answer
    x = 21,157.75

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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.