Home / 27,831.22-38,443.89-20,745.34

Finding the Fourth Proportional to 27,831.22, 38,443.89 and 20,745.34

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Solution

The fourth proportional to 27,831.22, 38,443.89 and 20,745.34 is: 28,656.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,831.22 : 38,443.89 = 20,745.34 : x
  2. Step 2: Convert to fraction form
    27,831.22/38,443.89 = 20,745.34/x
  3. Step 3: Cross multiply
    27,831.22x = 38,443.89 × 20,745.34
  4. Step 4: Simplify right side
    27,831.22x = 797,531,568.97
  5. Step 5: Solve for x
    x = 797,531,568.97/27,831.22
  6. Step 6: Final answer
    x = 28,656.00

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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.