Home / 27,790.85-38,351.37-15,215.60

Finding the Fourth Proportional to 27,790.85, 38,351.37 and 15,215.60

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Solution

The fourth proportional to 27,790.85, 38,351.37 and 15,215.60 is: 20,997.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,790.85 : 38,351.37 = 15,215.60 : x
  2. Step 2: Convert to fraction form
    27,790.85/38,351.37 = 15,215.60/x
  3. Step 3: Cross multiply
    27,790.85x = 38,351.37 × 15,215.60
  4. Step 4: Simplify right side
    27,790.85x = 583,539,105.37
  5. Step 5: Solve for x
    x = 583,539,105.37/27,790.85
  6. Step 6: Final answer
    x = 20,997.53

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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.