Home / 22,265.10-30,719.53-12,831.86

Finding the Fourth Proportional to 22,265.10, 30,719.53 and 12,831.86

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Solution

The fourth proportional to 22,265.10, 30,719.53 and 12,831.86 is: 17,704.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,265.10 : 30,719.53 = 12,831.86 : x
  2. Step 2: Convert to fraction form
    22,265.10/30,719.53 = 12,831.86/x
  3. Step 3: Cross multiply
    22,265.10x = 30,719.53 × 12,831.86
  4. Step 4: Simplify right side
    22,265.10x = 394,188,708.23
  5. Step 5: Solve for x
    x = 394,188,708.23/22,265.10
  6. Step 6: Final answer
    x = 17,704.33

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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.