Home / 27,879.75-38,474.19-15,304.50

Finding the Fourth Proportional to 27,879.75, 38,474.19 and 15,304.50

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Solution

The fourth proportional to 27,879.75, 38,474.19 and 15,304.50 is: 21,120.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879.75 : 38,474.19 = 15,304.50 : x
  2. Step 2: Convert to fraction form
    27,879.75/38,474.19 = 15,304.50/x
  3. Step 3: Cross multiply
    27,879.75x = 38,474.19 × 15,304.50
  4. Step 4: Simplify right side
    27,879.75x = 588,828,240.86
  5. Step 5: Solve for x
    x = 588,828,240.86/27,879.75
  6. Step 6: Final answer
    x = 21,120.28

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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.