Home / 27,906.75-38,511.59-15,331.77

Finding the Fourth Proportional to 27,906.75, 38,511.59 and 15,331.77

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Solution

The fourth proportional to 27,906.75, 38,511.59 and 15,331.77 is: 21,157.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,906.75 : 38,511.59 = 15,331.77 : x
  2. Step 2: Convert to fraction form
    27,906.75/38,511.59 = 15,331.77/x
  3. Step 3: Cross multiply
    27,906.75x = 38,511.59 × 15,331.77
  4. Step 4: Simplify right side
    27,906.75x = 590,450,763.56
  5. Step 5: Solve for x
    x = 590,450,763.56/27,906.75
  6. Step 6: Final answer
    x = 21,157.99

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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.