Home / 27,831.72-38,444.58-20,745.84

Finding the Fourth Proportional to 27,831.72, 38,444.58 and 20,745.84

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Solution

The fourth proportional to 27,831.72, 38,444.58 and 20,745.84 is: 28,656.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,831.72 : 38,444.58 = 20,745.84 : x
  2. Step 2: Convert to fraction form
    27,831.72/38,444.58 = 20,745.84/x
  3. Step 3: Cross multiply
    27,831.72x = 38,444.58 × 20,745.84
  4. Step 4: Simplify right side
    27,831.72x = 797,565,105.55
  5. Step 5: Solve for x
    x = 797,565,105.55/27,831.72
  6. Step 6: Final answer
    x = 28,656.69

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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.