Home / 20,194.70-30,292.05-12,831.80

Finding the Fourth Proportional to 20,194.70, 30,292.05 and 12,831.80

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Solution

The fourth proportional to 20,194.70, 30,292.05 and 12,831.80 is: 19,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,194.70 : 30,292.05 = 12,831.80 : x
  2. Step 2: Convert to fraction form
    20,194.70/30,292.05 = 12,831.80/x
  3. Step 3: Cross multiply
    20,194.70x = 30,292.05 × 12,831.80
  4. Step 4: Simplify right side
    20,194.70x = 388,701,527.19
  5. Step 5: Solve for x
    x = 388,701,527.19/20,194.70
  6. Step 6: Final answer
    x = 19,247.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.