Home / 27,831.22-38,406.79-15,255.90

Finding the Fourth Proportional to 27,831.22, 38,406.79 and 15,255.90

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Solution

The fourth proportional to 27,831.22, 38,406.79 and 15,255.90 is: 21,052.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,831.22 : 38,406.79 = 15,255.90 : x
  2. Step 2: Convert to fraction form
    27,831.22/38,406.79 = 15,255.90/x
  3. Step 3: Cross multiply
    27,831.22x = 38,406.79 × 15,255.90
  4. Step 4: Simplify right side
    27,831.22x = 585,930,147.56
  5. Step 5: Solve for x
    x = 585,930,147.56/27,831.22
  6. Step 6: Final answer
    x = 21,052.98

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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.